Kentaro, the Smiling Cat

+1: all creatures you control gain bushido X until end of turn where x is the number equivalent to the creatures you control.
-3: you may pay 4 white mana for any noncreature nonartifact spells until end of turn.
-7: Kintaro +1 loyalty regenerates each upkeep commenced by both player. target artifact from opponents library is exiled.