From Dota 2 Wiki
Main Article: Runes#List
- Grants 40 + 2 per minute gold to every player of the team that picks them up.
- The extra gold bonus increases by 1 every 30 seconds.
- An over-head text shows how much gold was given exactly. This number is not visible to enemies.
- When bottling a Bounty Rune, it grants gold based on the time at which it gets activated, not bottled.