Whenever Ahri hits a target with a spell, she gains a stack of Essence Theft. When she has enough stacks, her next spell that hits an enemy also heals her. Grants a stack of Essence Theft if her ability hits a target. At 3 stacks, Ahri's next ability that hits an enemy heals her for 40 (+20%).
If an enemy champion that Ahri has damaged within 3 seconds dies, she will consume their essence to heal herself for 80 (+35%).