Kai-Sha, Clan Rebel

Prowess, Delve, Dash {w}{u}{b}{r}{g}
At the beginning of your end step Bolster X, where X is the number of spells cast this turn. Whenever Kai-Sha attacks, put 2 1/1 red goblin tokens onto the battlefield.
Ferocious-When Kai-Sha enters the battlefield, if you control a creature with power 4 or greater, put the top 5 cards of your library into your graveyard.