Main Article: Runes
- Power Runes
- Power runes start spawning at the 6:00 minute mark, and then every 2 minutes (8:00, 10:00, 12:00, etc.)
- They spawn at one of the rune spots within the river, which is randomly chosen.
- If a Power Rune is not picked up before the next one spawns, it disappears.
- The same Power Rune cannot spawn twice in a row.
- Grants flat bonus attack damage based on the affected unit's main attack damage. Does not further increase bonus attack damage.
- The hero's current main attack damage is checked periodically, and the bonuses are adapted instantly.
- The buff of multiple Double Damage Runes does not stack, but refreshes the duration instead.