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Damage over time

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Damage over time (DoT) is a condition that causes the affected unit to constantly take damage until the effect expires, is dispelled, or the target moves out of range. Damage is dealt at the end of each interval, the first of which begins when the spell lands. Some spells come with an initial damage, which may or may not be equal to the periodic damage.

Notes:
Initial Damage: Many DoTs start immediately upon impact. The initial damage in this case is the same as damage per instance. Some DoTs have different initial damages.
Interval: Time between instances in seconds.
Damage per Instance: Damage of each tick after the initial damage.
Damage Duration: Duration from start to the last instance of damage. In many cases this is shorter than effect duration, especially ones that start immediately.
Number of Intervals: Generally equals Damage Duration / Interval. Does not include initial damage.
Max Total Damage: Generally equals Initial Damage + Damage per Instance × Number of Intervals.

Abilities that deal damage over time[edit]

  • Acid Spray icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 15/20/25/30
    Damage Duration: 16
    Number of Intervals: 16
    Max Total Damage: 240/320/400/480
  • Cold Feet icon.png
    Initial Damage: 30/50/70/90
    Interval: 1
    Damage per Instance: 30/50/70/90
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 120/200/280/360
    Stops dealing damage if the target moves 740 range away from the mark at any point during the initial debuff.
  • Ice Blast icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 12.5/20/32
    Damage Duration: 9/10/11 (Upgradable by Aghanim's Scepter. 17)
    Number of Intervals: 9/10/11 (Upgradable by Aghanim's Scepter. 17)
    Max Total Damage: 112.5/200/352 (Upgradable by Aghanim's Scepter. 212.5/340/544)
    Explosion damage was not included.
  • Flux icon.png
    Initial Damage: 7.5/15/22.5/30
    Interval: 0.5
    Damage per Instance: 7.5/15/22.5/30
    Damage Duration: 6
    Number of Intervals: 12
    Max Total Damage: 97.5/195/292.5/390
    The effect is muted if another enemy unit is within a 225 radius.
  • Battle Hunger icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 16/24/32/40 (Talent 136/144/152/160)
    Damage Duration: 12
    Number of Intervals: 12
    Max Total Damage: 192/288/384/480 (Talent 1632/1728/1824/1920)
    Stops dealing damage if the target has killed any unit.
  • Fiend's Grip icon.png
    Initial Damage: 50/77.5/107.5
    Interval: 0.5
    Damage per Instance: 50/77.5/107.5
    Damage Duration: 6 (Talent 13)
    Number of Intervals: 11 (Talent 25)
    Max Total Damage: 600/930/1290 (Talent 1300/2015/2795)
  • Firefly icon.png
    Initial Damage: 0
    Interval: First interval is 0.4, the rest are 0.5
    Damage per Instance: 5/15/25/35
    Damage Duration: 15 (Talent 23)
    Number of Intervals: 31 (Talent 47)
    Max Total Damage: 155/465/775/1085 (Talent 235/705/1175/1645)
  • Flamebreak icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 25/30/35/40
    Damage Duration: 4/5/6/7 (Talent 6/7/8/9)
    Number of Intervals: 4/5/6/7 (Talent 6/7/8/9)
    Max Total Damage: 100/150/210/280 (Talent 150/210/280/360)
  • Flaming Lasso icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 20/40/60
    Damage Duration: 3/3/4
    Number of Intervals: 3/3/4
    Max Total Damage: 60/120/240
  • Cinder Brew icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 10/15/20/25
    Damage Duration: 5
    Number of Intervals: 10
    Max Total Damage: 100/150/200/250
  • Battery Assault icon.png
    Initial Damage: 20/45/70/95 (Talent 50/75/100/125)
    Interval: 0.7 (Talent 0.4)
    Damage per Instance: 20/45/70/95 (Talent 50/75/100/125)
    Damage Duration: 10.5
    Number of Intervals: 15 (Talent 26)
    Max Total Damage: 320/720/1120/1520 (Talent 1350/2025/2700/3375)
    Not in the form of a debuff.
  • Frostbite icon.png
    Initial Damage: 50
    Interval: 0.5
    Damage per Instance: 50
    Damage Duration: 1/1.5/2/2.5 (Talent 2.5/3/3.5/4) for heroes, 9.5 (Talent 11) for creeps
    Number of Intervals: 2/3/4/5 (Talent 5/6/7/8) for heroes, 19 (Talent 22) for creeps
    Max Total Damage: 150/200/250/300 (Talent 300/350/400/450) to heroes, 1000 (Talent 1150) to creeps
  • Freezing Field icon.png
    Initial Damage: 0
    Interval: 0.1
    Damage per Instance: 105/170/250 (Talent 170/250/310)
    Damage Duration: 10
    Number of Intervals: 100
    Max Total Damage: 10500/17000/25000 (Talent 17000/25000/31000)
  • Ion Shell icon.png
    Initial Damage: 0
    Interval: 0.1
    Damage per Instance: 3/5/7/9 (Talent 18/20/22/24)
    Damage Duration: 25
    Number of Intervals: 250
    Max Total Damage: 750/1250/1750/2250 (Talent 4500/5000/5500/6000)
  • Bramble Maze icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 62.5/50/43.75/40
    Damage Duration: 2
    Number of Intervals: 4
    Max Total Damage: 125/150/175/200
  • Poison Touch icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 16/28/40/52 (Talent 61/73/85/97)
    Damage Duration: 4/5/6/7
    Number of Intervals: 4/5/6/7
    Max Total Damage: 64/140/240/364 (Talent 244/365/510/679)
    Duration refreshed whenever a player or Roshan lands an attack on the debuffed unit.
  • Spirit Siphon icon.png
    Initial Damage: 0
    Interval: 0.25
    Damage per Instance: 3.5 + 0.25%/0.625%/1%/1.375% (Talent 0.5%/0.875%/1.25%/1.625%) of max HP
    Damage Duration: 6
    Number of Intervals: 24
    Max Total Damage: 84 + 6%/15%/24%/33% (Talent 12%/21%/30%/39%) of max HP
  • Static Storm icon.png
    Initial Damage: 0
    Interval: 0.25
    Damage of each Instance (Level 1): 2/5/7/10/12/15/17/20/22/25/27/30/32/35/37/40/42/45/47/50 (Upgradable by Aghanim's Scepter. /52/55/57/60/62/65/67/70)
    Damage of each Instance (Level 2): 3/6/9/12/15/18/21/25/28/31/34/37/40/43/46/50/53/56/59/62 (Upgradable by Aghanim's Scepter. /65/68/71/75/78/81/84/87)
    Damage of each Instance (Level 3): 3/7/11/15/18/22/26/30/33/37/41/45/48/52/56/60/63/67/71/75 (Upgradable by Aghanim's Scepter. /78/82/86/90/93/97/101/105)
    Damage Duration: 5 (Upgradable by Aghanim's Scepter. 7)
    Number of Intervals: 20 (Upgradable by Aghanim's Scepter. 28)
    Max Total Damage: 525/656.25/787.5 (Upgradable by Aghanim's Scepter. 1015/1268.75/1522.5)
  • Thunder Strike icon.png
    Initial Damage: 45/70/95/120 (Talent 85/110/135/160)
    Interval: 2
    Damage per Instance: 45/70/95/120 (Talent 85/110/135/160)
    Damage Duration: 6 (Talent 14)
    Number of Intervals: 3 (Talent 7)
    Max Total Damage: 160/240/320/400 (Talent 680/880/1080/1280)
  • Doom ability icon.png
    Initial Damage: 25/40/55 (Talent 65/80/95)
    Interval: 1
    Damage per Instance: 25/40/55 (Talent 65/80/95)
    Damage Duration: 15 (Upgradable by Aghanim's Scepter. at least 15)
    Number of Intervals: 15 (Upgradable by Aghanim's Scepter. at least 15)
    Max Total Damage: 400/640/880 (Talent 1040/1280/1520) (Upgradable by Aghanim's Scepter. at least 400/640/880 (Talent 1040/1280/1520))
    Affected units under 25% health can be denied.
  • Infernal Blade icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 25 + 1.25%/2.5%/3.75%/5% (Talent 4.25%/5.5%/6.75%/8%) of max HP
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 100 + 5%/10%/15%/20% (Talent 17%/22%/27%/32%) of max HP
  • Scorched Earth icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 20/30/40/50 (Talent 40/50/60/70)
    Damage Duration: 10/12/14/16
    Number of Intervals: 10/12/14/16
    Max Total Damage: 200/360/560/800 (Talent 400/600/840/1120)
  • Elder Dragon Form icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 20
    Damage Duration: 5
    Number of Intervals: 5
    Max Total Damage: 100
    Available for Level 1, Level 2 & Level 3 Elder Dragon Form.
  • Magnetize icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 25/37.5/50
    Damage Duration: 6
    Number of Intervals: 12
    Max Total Damage: 300/450/600
    Duration refreshed if any Stone Remnants nearby.
  • Flame Guard icon.png
    Initial Damage: 0
    Interval: 0.2
    Damage per Instance: 6/8/10/12 (Talent 18/20/22/24)
    Damage Duration: 8/12/16/20
    Number of Intervals: 40/60/80/100
    Max Total Damage: 240/480/800/1200 (Talent 720/1200/1760/2400)
    Not in the form of a debuff.
  • Searing Chains icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 30/40/46/50
    Damage Duration: 1.5/2/2.5/3 (Talent 2.5/3/3.5/4)
    Number of Intervals: 3/4/5/6 (Talent 5/6/7/8)
    Max Total Damage: 90/160/230/300 (Talent 150/240/322/400)
  • Black Hole icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 50/100/150 (Upgradable by Aghanim's Scepter. + Midnight Pulse damage)
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 200/400/600 (Upgradable by Aghanim's Scepter. + 15%/17%/19%/21% of max HP)
  • Malefice icon.png
    Initial Damage: 30/50/70/90
    Interval: 2
    Damage per Instance: 30/50/70/90
    Damage Duration: 4 (Talent 14)
    Number of Intervals: 2 (Talent 7)
    Max Total Damage: 90/150/210/270 (Talent 240/400/560/720)
  • Midnight Pulse icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 3.75%/4.25%/4.75%/5.25% of max HP
    Damage Duration: 9/10/11/12
    Number of Intervals: 9/10/11/12
    Max Total Damage: 33.75%/42.5%/52.25%/63% of max HP
  • Permanent Immolation (Fire) icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 20/40/60
    Damage Duration: 16/18/20
    Number of Intervals: 16/18/20
    Max Total Damage: 330/740/1230
  • Ink Swell icon.png
    Initial Damage: 5/7/9/11
    Interval: 0.2
    Damage per Instance: 5/7/9/11
    Damage Duration: 2.8
    Number of Intervals: 14
    Max Total Damage: 75/105/135/165
  • Phantom's Embrace icon.png
    Initial Damage: 3/7/11/15
    Interval: 0.5
    Damage per Instance: 3/7/11/15
    Damage Duration: 4.5
    Number of Intervals: 9
    Max Total Damage: 30/70/110/150
  • Rocket Barrage icon.png
    Initial Damage: 0
    Interval: 0.1
    Damage per Instance: 7/12/17/22 (Talent 18/23/28/33)
    Damage Duration: 3
    Number of Intervals: 30
    Max Total Damage: 210/360/510/660 (Talent 540/690/840/990)
    Not in the form of a debuff.
  • Burning Spear icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 5/10/15/20 (Talent 15/20/25/30) per stack
    Damage Duration: 8
    Number of Intervals: 8
    Max Total Damage: 40/80/120/160 (Talent 120/160/200/240) per stack
  • Ice Wall icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 6/12/18/24/30/36/42 (Upgradable by Aghanim's Scepter. /48)
    Damage Duration: 3/4.5/6/7.5/9/10.5/12 (Upgradable by Aghanim's Scepter. /13.5)
    Number of Intervals: 3/4/6/7/9/10/12 (Upgradable by Aghanim's Scepter. /13)
    Max Total Damage: 18/48/108/168/270/360/504 (Upgradable by Aghanim's Scepter. /624)
  • Chaos Meteor icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 5.75/7.5/9.25/11/12.75/13/16.25 (Upgradable by Aghanim's Scepter. /36)
    Damage Duration: 3
    Number of Intervals: 4/5/6/7/8/9/10 (Upgradable by Aghanim's Scepter. /11)
    Max Total Damage: 138/225/333/462/612/783/975 (Upgradable by Aghanim's Scepter. /1188)
    The debuffs from each interval fully stack and do not refresh each other. Main damage was not counted.
  • Dual Breath icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 10/20/30/40 (Talent 30/40/50/60)
    Damage Duration: 5
    Number of Intervals: 10
    Max Total Damage: 100/200/300/400 (Talent 300/400/500/600)
  • Liquid Fire icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 6/8/10/12
    Damage Duration: 5
    Number of Intervals: 10
    Max Total Damage: 60/80/100/120
  • Macropyre icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 50/70/90 (Upgradable by Aghanim's Scepter. 62.5/87.5/112.5)
    Damage Duration: 12 (Upgradable by Aghanim's Scepter. 32)
    Number of Intervals: 23 (Upgradable by Aghanim's Scepter. 63)
    Max Total Damage: 1150/1610/2070 (Upgradable by Aghanim's Scepter. 3937.5/5512.5/7087.5)
  • Blade Fury icon.png
    Initial Damage: 0
    Interval: 0.2
    Damage per Instance: 18/23/28/32 (Talent 38/43/48/52)
    Damage Duration: 5
    Number of Intervals: 25
    Max Total Damage: 450/575/700/800 (Talent 950/1075/1200/1300)
  • Ghostship icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 5% of damage taken
    Damage Duration: 10
    Number of Intervals: 10
    Max Total Damage: 50% of damage taken
    The damage to allies is not lethal.
  • Torrent icon.png
    Initial Damage: 0
    Interval: 0.2
    Damage per Instance: 9.375/18.75/28.125/37.5 (Talent 24.375/33.75/43.125/52.5)
    Damage Duration: 1.6
    Number of Intervals: 8
    Max Total Damage: 75/150/225/300 (Talent 195/270/345/420)
  • Diabolic Edict icon.png
    Initial Damage: 11/22/33/44 to units, 15.4/30.8/46.2/61.6 to buildings
    Interval: 0.25 (Talent 0.125)
    Damage per Instance: 11/22/33/44 to units, 15.4/30.8/46.2/61.6 to buildings
    Damage Duration: 9.75
    Number of Intervals: 39 (Talent 79)
    Max Total Damage: 360/720/1080/1440 (Talent 880/1760/2640/3520) to units, 616/1232/1848/2464 (Talent 1232/2464/3696/4928) to buildings
    Not in the form of a debuff.
  • Pulse Nova icon.png
    Initial Damage: 100/140/180 (Talent 150/190/230)
    Interval: 1
    Damage per Instance: 100/140/180 (Talent 150/190/230)
    Damage Duration: Indefinite
    Number of Intervals: Indefinite
    Max Total Damage: Indefinite
    Not in the form of a debuff.
  • Eclipse icon.png
    Initial Damage: Lucent Beam damage
    Interval: 0.6 (Upgradable by Aghanim's Scepter. 0.3)
    Damage per Instance: Lucent Beam damage
    Damage Duration: 2.4/4.2/6 (Upgradable by Aghanim's Scepter. 1.5/3.3/5.1)
    Number of Intervals: 4/7/10 (Upgradable by Aghanim's Scepter. 5/11/17)
    Max Total Damage: 5/8/11 (Upgradable by Aghanim's Scepter. 6/12/18) × Lucent Beam damage
    Not in the form of a debuff.
  • Heartstopper Aura icon.png
    Initial Damage: 0
    Interval: 0.2
    Damage per Instance: 0.1%/0.22%/0.34%/0.46% (Talent 0.26%/0.38%/0.5%/0.62%) of max HP
    Damage Duration: Indefinite
    Number of Intervals: Indefinite
    Max Total Damage: Indefinite
    The time intervals are set for the whole game when Heartstopper Aura is learned the first time.
  • Ignite icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 26/34/42/50
    Damage Duration: 5/6/7/8
    Number of Intervals: 5/6/7/8
    Max Total Damage: 130/204/294/400
  • Fire Spirits icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 20/40/60/80 (Talent 60/80/100/120)
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 80/160/240/320 (Talent 240/320/400/480)
  • Icarus Dive icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 10/30/50/70
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 40/120/200/280
  • Sun Ray icon.png
    Initial Damage: 0
    Interval: 0.2
    Damage per Instance: 2.8/4/5.2/6.4 + 0.3%/0.65%/1%/1.35% (Talent 0.7%/1.05%/1.4%/1.75%) of max HP. Additional 0.467/0.667/0.867/1.067 + 0.1/0.1/0.2/0.2% (Talent 0.1%/0.2%/0.2%/0.3%) of max HP dealt each instance
    Damage Duration: 6
    Number of Intervals: 30
    Max Total Damage: 126/180/234/288 + 13.5%/29.25%/45%/60.75% (Talent 31.5%/47.25%/63%/78.75%) of max HP
  • Supernova icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 60/90/120
    Damage Duration: 6
    Number of Intervals: 6
    Max Total Damage: 360/540/720
  • Dismember icon.png
    Initial Damage: 60/90/120 + 30%/60%/90% of STR
    Interval: 1
    Damage per Instance: 60/90/120 + 30%/60%/90% of STR
    Damage Duration: 2 (Talent 5) (heroes), 5 (Talent 8) (creeps)
    Number of Intervals: 2 (Talent 5) (heroes), 5 (Talent 8) (creeps)
    Max Total Damage: 180/270/360 (Talent 340/540/720) + 90%/180%/270% (Talent 180%/360%/540%) of STR (heroes), 360/540/720 (Talent 540/810/1080) + 180%/240%/300% (Talent 270%/540%/810%) of STR (creeps)
  • Rot icon.png
    Initial Damage: 0
    Interval: 0.2
    Damage per Instance: 6/12/18/24 (Talent 13/19/25/31)
    Damage Duration: Indefinite
    Number of Intervals: Indefinite
    Max Total Damage: Indefinite
    The time intervals are set for the whole game when Rot gets toggled the first time.
  • Life Drain icon.png
    Initial Damage: 0
    Interval: 0.25
    Damage per Instance: 37.5/56.25/75
    Damage Duration: 10
    Number of Intervals: 40
    Max Total Damage: 1500/2250/3000
  • Shadow Strike icon.png
    Initial Damage: 50/75/100/125
    Interval: 3
    Damage per Instance: 30/50/70/90
    Damage Duration: 15
    Number of Intervals: 5
    Max Total Damage: 200/325/450/575
    Affected units under 25% health can be denied.
  • Eye of the Storm icon.png
    Initial Damage: 0
    Interval: 0.7/0.6/0.5 (Talent 0.6/0.5/0.4) (Upgradable by Aghanim's Scepter. 0.6/0.5/0.4, Talent 0.5/0.4/0.3)
    Damage per Instance: 40/55/70
    Damage Duration: 30
    Number of Intervals: 42/50/60 (Talent 50/60/75) (Upgradable by Aghanim's Scepter. 50/60/75, Talent 60/75/100)
    Max Total Damage: 1680/2750/4200 (Talent 2000/3300/5250) (Upgradable by Aghanim's Scepter. 2000/3300/5250, Talent 2400/4125/7000)
    Not in the form of a debuff.
  • Epicenter icon.png
    Initial Damage: 0
    Interval of Pulses: 0.5/0.375/0.3 (Talent 0.3/0.25/0.21)
    Damage per Pulse: 110
    Number of Pulses: 6/8/10 (Talent 10/12/14)
    Max Total Damage: 660/880/1100 (Talent 1100/1320/1540)
  • Sand Storm icon.png
    Initial Damage: 10/20/30/40 (Talent 30/40/50/60)
    Interval: 0.5
    Damage per Instance: 10/20/30/40 (Talent 30/40/50/60)
    Damage Duration: 19.5/24.5/29.5/34.5
    Number of Intervals: 39/49/59/69
    Max Total Damage: 400/1000/1800/2800 (Talent 1200/2000/3000/4200)
  • Shackles icon.png
    Initial Damage: 2.182/4.571/6.118/7.2
    Interval: 0.1
    Damage per Instance: 2.182/4.571/6.118/7.2
    Damage Duration: 2.7/3.4/4.2/4.9 (Talent 5.2/5.9/6.7/7.4)
    Number of Intervals: 27/34/42/49 (Talent 52/59/67/74)
    Max Total Damage: 60/160/260/360 (Talent 116/274/416/540)
  • Arcane Curse icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 16/24/32/40 (Talent 46/54/62/70)
    Damage Duration: 6
    Number of Intervals: 6 (+5 per penalty)
    Max Total Damage: 96/144/192/240 (Talent 276/324/372/420) + 80/120/160/200 (Talent 230/270/310/350) per penalty
  • Mystic Flare icon.png
    Initial Damage: 0
    Interval: 0.1
    Damage per Instance: 25/41.66/58.33 (Talent 50/66.67/83.33)
    Damage Duration: 2.4
    Number of Intervals: 24
    Max Total Damage: 600/1000/1400 (Talent 1200/1600/2000) (Upgradable by Aghanim's Scepter. 1200/2000/2800, Talent 2400/3200/4000)
    Not in the form of a debuff. Damage is split between targets.
  • Dark Pact icon.png
    Initial Damage: 7.5/15/22.5/30
    Interval: 0.1
    Damage per Instance: 7.5/15/22.5/30
    Damage Duration: 0.9
    Number of Intervals: 9
    Max Total Damage: 75/150/225/300
    Not in the form of a debuff.
  • Shrapnel icon.png
    Initial Damage: 15/35/55/75
    Interval: 1
    Damage per Instance: 15/35/55/75
    Damage Duration: 10
    Number of Intervals: 10
    Max Total Damage: 165/385/605/825
  • Poison Sting (Spiderling) icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 8
    Damage Duration: 2 for heroes, 6 for creeps
    Number of Intervals: 2 for heroes, 6 for creeps
    Max Total Damage: 16 to heroes, 48 to creeps
  • Entangling Claws (Spirit Bear) icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 60
    Damage Duration: 3 for heroes, 9 for creeps
    Number of Intervals: 3 for heroes, 9 for creeps
    Max Total Damage: 180 to heroes, 540 to creeps
  • Tempest (Tornado) icon.png
    Initial Damage: 0
    Interval: 0.25
    Damage per Instance: 45 when close, 15 when far
    Damage Duration: 40
    Number of Intervals: 160
    Max Total Damage: 1800 when close, and 600 when far
    Not in the form of a debuff.
  • Chakram icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 50/75/100
    Damage Duration: Indefinite
    Number of Intervals: Indefinite
    Max Total Damage: Indefinite
  • Chakram 2 icon.png
    Initial Damage: 0
    Interval: 0.5
    Damage per Instance: 50/75/100
    Damage Duration: Indefinite
    Number of Intervals: Indefinite
    Max Total Damage: Indefinite
  • Avalanche icon.png
    Initial Damage: 0
    Interval: First interval is 0.5, the rest are 0.3
    Damage per Instance: 20/30/40/50 (Talent 36.67/46.67/56.67/66.67)
    Damage Duration: 1.8
    Number of Intervals: 6
    Max Total Damage: 120/180/240/300 (Talent 220/280/340/400)
    Not in the form of a debuff.
  • Leech Seed icon.png
    Initial Damage: 0
    Interval: 0.75
    Damage per Instance: 12/24/36/48 (Talent 62/74/86/98)
    Damage Duration: 5.25
    Number of Intervals: 7
    Max Total Damage: 84/168/252/336 (Talent 434/518/602/686)
  • Overgrowth icon.png
    Initial Damage: 0
    Interval: 0 (Upgradable by Aghanim's Scepter. 1)
    Damage per Instance: 0 (Upgradable by Aghanim's Scepter. 175)
    Damage Duration: 0 (Upgradable by Aghanim's Scepter. 3/3/4)
    Number of Intervals: 0 (Upgradable by Aghanim's Scepter. 3/3/4)
    Max Total Damage: 0 (Upgradable by Aghanim's Scepter. 525/525/700)
  • Firestorm icon.png
    Initial Damage: 25/40/55/70 (Talent 43/58/73/88) (wave), 0 (burn)
    Interval: 1
    Damage per Instance: 25/40/55/70 (Talent 43/58/73/88) (wave), 1%/2%/3%/4% HP (burn)
    Damage Duration: 5 (wave), 2 (burn)
    Number of Intervals: 5 (wave), 2 (burn, 8 max per cast)
    Max Total Damage: 150/240/330/420 (Talent 258/348/438/528) (wave), 2%/4%/6%/8% HP (burn, 8%/16%/24%/32% max per cast)
    Wave not in the form of a debuff.
  • Venomous Gale icon.png
    Initial Damage: 25/50/75/100
    Interval: 3
    Damage per Instance: 10/40/70/100
    Damage Duration: 15
    Number of Intervals: 4
    Max Total Damage: 75/250/425/600
    Affected units under 25% health can be denied.
  • Poison Sting icon.png
    Initial Damage: 6/14/22/30
    Interval: 1
    Damage per Instance: 6/14/22/30
    Damage Duration: 6/9/12/15
    Number of Intervals: 5/8/11/14
    Max Total Damage: 36/126/264/450
    Plague Ward also has this ability, dealing 50% of the full damage.
  • Poison Nova icon.png
    Initial Damage: 40/65/90 (Upgradable by Aghanim's Scepter. 60/85/110)
    Interval: 1
    Damage per Instance: 40/65/90 (Upgradable by Aghanim's Scepter. 60/85/110)
    Damage Duration: 18 (Talent 25)
    Number of Intervals: 17 (Talent 24)
    Max Total Damage: 760/1235/1710 (Talent 1040/1690/2340) (Upgradable by Aghanim's Scepter. 1020/1445/1870, Talent 1560/2210/2860)
    Non-lethal. Reduces the unit's HP to a minimum of 1.
  • Corrosive Skin icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 8/16/24/32 (Talent 14/22/30/38)
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 32/64/96/128 (Talent 56/88/120/152)
  • Nethertoxin icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 30/45/60/75
    Damage Duration: 8
    Number of Intervals: 8
    Max Total Damage: 240/360/480/600
  • Poison Attack icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 0.25/0.5/0.75/1 per 1% of missing HP
    Damage Duration: 3
    Number of Intervals: 3
    Max Total Damage: 0.75/1.5/2.25/3 per 1% of missing HP
  • Viper Strike icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 60/100/145 (Talent 160/200/245)
    Damage Duration: 5
    Number of Intervals: 5
    Max Total Damage: 300/500/725 (Talent 800/1000/1225)
  • Envenomed Weapon (Vhoul Assassin) icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 2
    Damage Duration: 10 for heroes, 20 for creeps
    Number of Intervals: 10 for heroes, 20 for creeps
    Max Total Damage: 20 to heroes, 40 to creeps
    The damage is not lethal.
  • Shadow Word icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 15/25/35/45
    Damage Duration: 12
    Number of Intervals: 12
    Max Total Damage: 180/300/420/540
  • Permanent Immolation (Warlock's Golem) icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 30/50/70
    Damage Duration: 60
    Number of Intervals: 60
    Max Total Damage: 1800/3000/4200
  • The Swarm icon.png
    Initial Damage: 0
    Interval: 1.25/1.1/0.95/0.8
    Damage per Instance: 18/20/22/24
    Damage Duration: 16
    Number of Intervals: 12/14/16/20
    Max Total Damage: 234/300/374/504
  • Arctic Burn icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 6%/7%/8%/9% of current HP
    Damage Duration: 5
    Number of Intervals: 5
    Max Total Damage: 27%/30%/34%/38% of current HP
  • Maledict icon.png
    Initial Damage: 0
    Interval: 1 (flat), 4 (burst, 3.9 after impact)
    Damage per Instance: 7/14/21/28 (flat), 16%/24%/32%/40% (burst)
    Damage Duration: 12 (Talent 16) (flat), 11.9 (Talent 15.9) (burst)
    Number of Intervals: 12 (Talent 16) (flat), 3 (Talent 4) (burst)
    Max Total Damage: 84/168/252/336 (Talent 112/224/336/448) + 48%/72%/96%/120% (Talent 64%/96%/128%/160%) of lost HP
    Checks the affected units' current health each time the curse is applied.
  • Wraithfire Blast icon.png
    Initial Damage: 100
    Interval: 2 after impact, 1 after first tick.
    Damage per Instance: 10/30/50/70
    Damage Duration: 2 (Talent 3)
    Number of Intervals: 2 (Talent 3)
    Max Total Damage: 120/160/200/240 (Talent 130/190/250/310)

Items that deal damage over time[edit]

  • Armlet of Mordiggian (Inactive) icon.png
    Initial Damage: 0
    Interval: 0.11
    Damage per Instance: 5
    Duration: Indefinite
    Number of Intervals: Indefinite
    Max Total Damage: Indefinite
    Refers to the health cost. Not in the form of a debuff. Non-lethal. Reduces the unit's HP to a minimum of 1.
  • Orb of Venom icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 5
    Duration: 3
    Number of Intervals: 3
    Max Total Damage: 15
  • Radiance (Active) icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 50
    Duration: Indefinite
    Number of Intervals: Indefinite
    Max Total Damage: Indefinite
  • Urn of Shadows icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 35
    Duration: 8
    Number of Intervals: 8
    Max Total Damage: 280
  • Spirit Vessel icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 35
    Duration: 8
    Number of Intervals: 8
    Max Total Damage: 144 + 21.63% of targets current health