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 | edit source]

  • 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: 37.5/50/62.5/75
    Interval: 1
    Damage per Instance: 37.5/50/62.5/75
    Damage Duration: 3
    Number of Intervals: 3
    Max Total Damage: 150/200/250/300
    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: 8/9/10 (Upgradable by Aghanim's Scepter. 17)
    Number of Intervals: 8/9/10 (Upgradable by Aghanim's Scepter. 17)
    Max Total Damage: 100/180/320 (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 116/124/132/140)
    Damage Duration: 10
    Number of Intervals: 10
    Max Total Damage: 160/240/320/400 (Talent 1160/1240/1320/1400)
    Stops dealing damage if the target has killed any unit.
  • Nightmare icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 20
    Damage Duration: 4/5/6/7
    Number of Intervals: 4/5/6/7
    Max Total Damage: 80/100/120/140
  • Fiend's Grip icon.png
    Initial Damage: 100/155/215 (Upgradable by Aghanim's Scepter. 155/215/270)
    Interval: 1
    Damage per Instance: 100/155/215 (Upgradable by Aghanim's Scepter. 155/215/270)
    Damage Duration: 4 (Upgradable by Aghanim's Scepter. 6)
    Number of Intervals: 4 (Upgradable by Aghanim's Scepter. 6)
    Max Total Damage: 500/775/1075 (Upgradable by Aghanim's Scepter. 1085/1505/1890)
  • 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: 18 (Talent 26)
    Number of Intervals: 37 (Talent 53)
    Max Total Damage: 185/555/925/1295 (Talent 265/795/1325/1855)
  • Flamebreak icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 25/30/35/40
    Damage Duration: 4/5/6/7
    Number of Intervals: 4/5/6/7
    Max Total Damage: 100/150/210/280
  • Flaming Lasso icon.png
    Initial Damage: 0 (Upgradable by Aghanim's Scepter. 50)
    Interval: 0 (Upgradable by Aghanim's Scepter. 0.5)
    Damage per Instance: 0 (Upgradable by Aghanim's Scepter. 50)
    Damage Duration: 0 (Upgradable by Aghanim's Scepter. 3/3.5/4)
    Number of Intervals: 0 (Upgradable by Aghanim's Scepter. 5/6/7)
    Max Total Damage: 0 (Upgradable by Aghanim's Scepter. 300/350/400)
  • Battery Assault icon.png
    Initial Damage: 20/45/70/95
    Interval: 0.7
    Damage per Instance: 20/45/70/95
    Damage Duration: 10.5
    Number of Intervals: 15
    Max Total Damage: 320/720/1120/1520
    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 for heroes, 9.5 for creeps
    Number of Intervals: 2/3/4/5 for heroes, 19 for creeps
    Max Total Damage: 150/200/250/300 to heroes, 1000 to creeps
  • Freezing Field icon.png
    Initial Damage: 0
    Interval: 0.1
    Damage per Instance: 105/170/250 (Upgradable by Aghanim's Scepter. 170/250/310)
    Damage Duration: 10
    Number of Intervals: 100
    Max Total Damage: 10500/17000/25000 (Upgradable by Aghanim's Scepter. 17000/25000/31000)
  • Ion Shell icon.png
    Initial Damage: 0
    Interval: 0.1
    Damage per Instance: 3/5/7/9
    Damage Duration: 25
    Number of Intervals: 250
    Max Total Damage: 750/1250/1750/2250
  • Poison Touch icon.png
    Initial Damage: 14/20/26/36
    Interval: 1
    Damage per Instance: 14/20/26/36
    Damage Duration: 7
    Number of Intervals: 7
    Max Total Damage: 112/160/208/288
  • Spirit Siphon icon.png
    Initial Damage: 0
    Interval: 0.25
    Damage per Instance: 3.5 + 0.25%/0.625%/1%/1.375% of max HP
    Damage Duration: 6
    Number of Intervals: 24
    Max Total Damage: 84 + 6%/15%/24%/33% 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: 520/648/780 (Upgradable by Aghanim's Scepter. 1009/1257/1512)
  • Thunder Strike icon.png
    Initial Damage: 40/60/80/100
    Interval: 2
    Damage per Instance: 40/60/80/100
    Damage Duration: 6
    Number of Intervals: 3
    Max Total Damage: 160/240/320/400
  • Doom ability icon.png
    Initial Damage: 20/35/50
    Interval: 1
    Damage per Instance: 20/35/50
    Damage Duration: 14 (Upgradable by Aghanim's Scepter. at least 15)
    Number of Intervals: 14 (Upgradable by Aghanim's Scepter. at least 15)
    Max Total Damage: 300/525/750 (Upgradable by Aghanim's Scepter. at least 320/560/800)
    Affected units under 25% health can be denied.
  • Infernal Blade icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 25/30/35/40 + 1.25%/2.5%/3.75%/5% (Talent 3.25%/4.5%/5.75%/7%) of max HP
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 100/120/140/160 + 5%/10%/15%/20% (Talent 13%/18%/23%/28%) of max HP
  • Scorched Earth icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 10/20/30/40
    Damage Duration: 10/12/14/16
    Number of Intervals: 10/12/14/16
    Max Total Damage: 100/240/420/640
  • 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
    Damage Duration: 8/12/16/20
    Number of Intervals: 40/60/80/100
    Max Total Damage: 240/480/800/1200
    Not in the form of a debuff.
  • Searing Chains icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 80/60/120/100
    Damage Duration: 1/2/2/3
    Number of Intervals: 1/2/2/3
    Max Total Damage: 80/120/240/300
  • Black Hole icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 50/100/150 (Upgradable by Aghanim's Scepter. + Midnight Pulse icon.png Midnight Pulse​ damage)
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 200/400/600 (Upgradable by Aghanim's Scepter. + 12%/15%/18%/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
    Number of Intervals: 2
    Max Total Damage: 90/150/210/270
  • Midnight Pulse icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 3%/3.75%/4.5%/5.25% of max HP
    Damage Duration: 11
    Number of Intervals: 11
    Max Total Damage: 33%/41.25%/49.5%/57.75% of max HP
  • Permanent Immolation (Fire) icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 15/30/45
    Damage Duration: 15/17/19
    Number of Intervals: 15/17/19
    Max Total Damage: 225/510/855
  • Rocket Barrage icon.png
    Initial Damage: 0
    Interval: 0.1
    Damage per Instance: 7/12/17/22
    Damage Duration: 3
    Number of Intervals: 30
    Max Total Damage: 210/360/510/660
    Not in the form of a debuff.
  • Burning Spear icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 5/10/15/20 per stack
    Damage Duration: 8
    Number of Intervals: 8
    Max Total Damage: 40/80/120/160 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
    Damage Duration: 5
    Number of Intervals: 10
    Max Total Damage: 100/200/300/400
  • 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: 10 (Upgradable by Aghanim's Scepter. 30)
    Number of Intervals: 20 (Upgradable by Aghanim's Scepter. 60)
    Max Total Damage: 1000/1400/1800 (Upgradable by Aghanim's Scepter. 3750/5250/6750)
  • Blade Fury icon.png
    Initial Damage: 0
    Interval: 0.2
    Damage per Instance: 16/21/26/31 (Talent 51/56/61/66)
    Damage Duration: 5
    Number of Intervals: 25
    Max Total Damage: 400/525/650/775 (Talent 1275/1400/1525/1650)
  • 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
    Damage Duration: 1.6
    Number of Intervals: 8
    Max Total Damage: 75/150/225/300
  • Diabolic Edict icon.png
    Initial Damage: 9/18/27/36 (12.6/25.2/37.8/50.4 to buildings)
    Interval: 0.25
    Damage per Instance: 9/18/27/36 (12.6/25.2/37.8/50.4 to buildings)
    Damage Duration: 9.75
    Number of Intervals: 39
    Max Total Damage: 360/720/1080/1440 to units, 504/1008/1512/2016 to buildings
    Not in the form of a debuff.
  • Pulse Nova icon.png
    Initial Damage: 100/130/160 (Upgradable by Aghanim's Scepter. 160/190/220)
    Interval: 1
    Damage per Instance: 100/130/160 (Upgradable by Aghanim's Scepter. 160/190/220)
    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 icon.png Lucent Beam​ damage
    Interval: 0.6 (Upgradable by Aghanim's Scepter. 0.3)
    Damage per Instance: Lucent Beam icon.png 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 icon.png Lucent Beam​ damage
    Not in the form of a debuff.
  • Geostrike icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 10/20/30/40
    Damage Duration: 2
    Number of Intervals: 2
    Max Total Damage: 20/40/60/80
  • Heartstopper Aura icon.png
    Initial Damage: 0
    Interval: 0.2
    Damage per Instance: 0.12%/0.2%/0.28%/0.36% 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: 10/30/50/70
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 40/120/200/280
  • 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: 10/15/20/25 (+ 0.34/0.52/0.69/0.86 each 0.2 seconds) + 1.25%/2.5%/3.75%/5% (+ 0.04%/0.09%/0.13%/0.17% each 0.2 seconds) of max HP.
    Damage Duration: 6
    Number of Intervals: 30
    Max Total Damage: 90/135/180/225 + 11.25%/22.5%/33.75%/45% 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%/40%/50% of STR
    Interval: 1
    Damage per Instance: 60/90/120 + 30%/40%/50% of STR
    Damage Duration: 2 (heroes), 5 (creeps)
    Number of Intervals: 2 (heroes), 5 (creeps)
    Max Total Damage: 180/270/360 + 90%/120%/150% of STR (heroes), 360/540/720 + 180%/240%/300% of STR (creeps)
  • Rot icon.png
    Initial Damage: 0
    Interval: 0.2
    Damage per Instance: 6/12/18/24
    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: 37.5/50/62.5 (Upgradable by Aghanim's Scepter. 45/60/75)
    Damage Duration: 10
    Number of Intervals: 40
    Max Total Damage: 1500/2000/2500 (Upgradable by Aghanim's Scepter. 1800/2400/3000)
  • Shadow Strike icon.png
    Initial Damage: 50/75/100/125
    Interval: 3
    Damage per Instance: 30/40/50/60
    Damage Duration: 15
    Number of Intervals: 5
    Max Total Damage: 200/275/350/425
    Affected units under 25% health can be denied.
  • Eye of the Storm icon.png
    Initial Damage: 0
    Interval: 0.7/0.6/0.5 (Upgradable by Aghanim's Scepter. 0.6/0.5/0.4)
    Damage per Instance: 40/55/70
    Damage Duration: 30
    Number of Intervals: 42/50/60 (Upgradable by Aghanim's Scepter. 50/60/75)
    Max Total Damage: 1680/2750/4200 (Upgradable by Aghanim's Scepter. 2000/3300/5250)
    Not in the form of a debuff.
  • Epicenter icon.png
    Initial Damage: 0
    Interval of Pulses: 0.5/0.375/0.3
    Damage per Pulse: 110
    Number of Pulses: 6/8/10
    Max Total Damage: 660/880/1100
  • Sand Storm icon.png
    Initial Damage: 12.5/25/37.5/50
    Interval: 0.5
    Damage per Instance: 12.5/25/37.5/50
    Damage Duration: 49.5
    Number of Intervals: 99
    Max Total Damage: 1250/2500/3750/5000
  • Shackles icon.png
    Initial Damage: 4.286/5.714/6.512/7.2
    Interval: 0.1
    Damage per Instance: 4.286/5.714/6.512/7.2
    Damage Duration: 2.7/3.4/4.2/4.9
    Number of Intervals: 27/34/42/49
    Max Total Damage: 120/200/280/360
  • Arcane Curse icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 14/22/30/38
    Damage Duration: 6
    Number of Intervals: 6 (+4 per penalty)
    Max Total Damage: 84/132/180/228 (+56/88/120/152 per penalty)
  • Mystic Flare icon.png
    Initial Damage: 0
    Interval: 0.1
    Damage per Instance: 25/41.66/58.33
    Damage Duration: 2.4 (Upgradable by Aghanim's Scepter. 12)
    Number of Intervals: 24 (Upgradable by Aghanim's Scepter. 120)
    Max Total Damage: 600/1000/1400 (Upgradable by Aghanim's Scepter. 3000/5000/7000)
    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 0.25
    Damage per Instance: 25/45/65/75
    Damage Duration: 1
    Number of Intervals: 4
    Max Total Damage: 100/180/260/300
    Not in the form of a debuff.
  • Leech Seed icon.png
    Initial Damage: 0
    Interval: 0.75
    Damage per Instance: 15/30/45/60
    Damage Duration: 4.5
    Number of Intervals: 6
    Max Total Damage: 90/180/270/360
  • Eyes in the Forest icon.png
    Initial Damage: 175
    Interval: 1
    Damage per Instance: 175
    Damage Duration: 2/3/4
    Number of Damage Intervals: 2/3/4
    Max Total Damage: 525/700/875
  • Firestorm icon.png
    Initial Damage: 25/40/55/70 (wave), 0 (burn)
    Interval: 1
    Damage per Instance: 25/40/55/70 (wave), 0.75%/1.5%/2.25%/3% HP (burn)
    Damage Duration: 5 (wave), 2 (burn)
    Number of Intervals: 5 (wave), 2 (burn, 8 max per cast)
    Max Total Damage: 75/250/425/600 (wave), 1.5%/3%/4.5%/6% HP (burn, 6%/12%/18%/24% 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: 5
    Max Total Damage: 75/250/425/600
    Affected units under 25% health can be denied.
  • Poison Sting icon.png
    Initial Damage: 6/12/18/24
    Interval: 1
    Damage per Instance: 5/10/15/20
    Damage Duration: 6/9/12/15
    Number of Intervals: 6/9/12/15
    Max Total Damage: 42/120/234/384
    Plague Ward also has this ability.
  • Poison Nova icon.png
    Initial Damage: 30/55/80 (Upgradable by Aghanim's Scepter. 60/85/110)
    Interval: 1
    Damage per Instance: 30/55/80 (Upgradable by Aghanim's Scepter. 60/85/110)
    Damage Duration: 16
    Number of Intervals: 16
    Max Total Damage: 510/935/1360 (Upgradable by Aghanim's Scepter. 1020/1445/1870)
    Non-lethal. Reduces the unit's HP to a minimum of 1.
  • Corrosive Skin icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 10/15/20/25
    Damage Duration: 4
    Number of Intervals: 4
    Max Total Damage: 40/60/80/100
  • Poison Attack icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 10/16/22/28
    Damage Duration: 2
    Number of Intervals: 2
    Max Total Damage: 20/32/44/56
  • Viper Strike icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 60/100/145
    Damage Duration: 5
    Number of Intervals: 5
    Max Total Damage: 300/500/725
  • 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: 30/40/50
    Damage Duration: 60
    Number of Intervals: 60
    Max Total Damage: 1800/2400/3000
  • The Swarm icon.png
    Initial Damage: 20
    Interval: 1.25/1.1/0.95/0.8
    Damage per Instance: 20
    Damage Duration: 16
    Number of Intervals: 12/14/16/20
    Max Total Damage: 260/300/340/420
  • Arctic Burn icon.png
    Initial Damage: 0
    Interval: 1
    Damage per Instance: 8% of current HP
    Damage Duration: 5
    Number of Intervals: 5
    Max Total Damage: 34.09% of current HP
  • Maledict icon.png
    Initial Damage: 0
    Interval: 1 (flat), 4 (burst, 3.9 after impact)
    Damage per Instance: 5/10/15/20 (flat), 16%/24%/32%/40% (burst)
    Damage Duration: 12 (flat), 11.9 (burst)
    Number of Intervals: 12 (flat), 3 (burst)
    Max Total Damage: 60/120/180/240 + 48%/72%/96%/120% of lost HP
    Checks the affected units' current health each time the curse is applied.
  • Wraithfire Blast icon.png
    Initial Damage: 50/100/150/200
    Interval: 2 after impact, 1 after first tick.
    Damage per Instance: 20/35/50/65
    Damage Duration: 3
    Number of Intervals: 2
    Max Total Damage: 90/170/250/330

Items that deal damage over time[edit | edit source]

  • 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: 3
    Duration: 4
    Number of Intervals: 4
    Max Total Damage: 12
  • 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: 18.75
    Duration: 8
    Number of Intervals: 8
    Max Total Damage: 150