Conqueror

Basic attacks or spells that deal damage to an enemy champion grant 2 stacks of Conqueror for 5s, gaining 1.8-4 Adaptive Force per stack. Stacks up to 12 times. Ranged champions gain only 1 stack per basic attack. When fully stacked, heal for 8% of the damage you deal to champions (5% for ranged champions).

Tree

Precision

Row

Keystone

In short

Gain stacks of adaptive force when attacking enemy champions. After reaching 12 stacks, heal for a portion of damage you deal to champions.

Patch

16.16.1