From Liquipedia Dota 2 Wiki
Transform into a meteor that strikes down on the target area. If damage is taken from a player (heroes, units under their control, and self damage) or Roshan, Fallen Sky will be disabled for a few seconds.
- Fallen Sky is not disabled if the source of hero damage was reduced to zero.
- HP Cost does not disable Fallen Sky.
- Total damage:
- 690 to units
- 375 to buildings