Kha'Zix

When you win a combat, gain 1 XP.
Spend 1 XP, : [Buff] a unit.
Spend 2 XP, : Move an exhausted friendly unit from a battlefield to its base.

[Hunt] (When I conquer or hold, gain 1 XP.)
When I attack, you may spend 3 XP to deal damage equal to my Might to an enemy unit here.

[Ambush] (You may play me as a [Reaction] to a battlefield where you have units.)
When I attack or defend, if an enemy unit is alone here, give me +2 this turn and gain 2 XP.

Move a friendly unit, then move an enemy unit. (If they both move to a battlefield you don't control, you're the attacker.)