Kekai The Brawler

Whenever another creature enters the battlefield
under your control, put a +1+1 counter on it.
Whenever a creature you control fights another creature put a +1+1 counter on it.
Creatures with +1+1 counters on them have
Trample and "{g}{g}{t}: This Creature Fights
another target creature. Activate this ability only
if both creatures have the same power."