Kha'Zix the Voidreaver

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
Whenever Kha'Zix the Voidreaver evolves, name a keyword ability. Kha'Zix gains all keyword abilities named by this effect as long as he has three or more counters on him.
"You are strong... Good."