Contagion

When you are damaged by an enemy Basic Attack or Ability, apply 1 stack of Contagion to them for 20s (once per attack). If you Basic Attack or apply Hard Crowd Control to an enemy with Contagion, consume them to deal 1% of your Max Health as Magical Damage per stack, in a 4m area. If someone lifesteals 100 Health from you, immediately apply 5 stacks to them.