Dark Ritual
Sacrifices a target friendly unit to convert its hit points into mana.
Level 1 - 15% of hit points to mana.
Level 2 - 30% of hit points to mana.
Level 3 - 45% of hit points to mana.
Level 4 - 60% of hit points to mana.
Cooldown: 55/50/45/40 seconds.
Level 1 - 25 mana, 400 cast range.
Level 2 - 25 mana, 400 cast range.
Level 3 - 25 mana, 400 cast range.
Level 4 - 25 mana, 400 cast range.
Notes :
* Converted creeps do not give any experience.
* If on Autocast, Lich automatically uses this skill to a nearby attacked allied creep.