Horaven the Hero

0: At the beginning of a player's turn, tap a creature you control. One of their activated or tap abilities becomes Horaven the Hero's minus ability
+1: Until end of turn, humans have "tap: activate a spirit's activated or tap ability
-X: X equals target activated ability's CMC or 2 for a tap ability. If it's a Spirit's ability, Transform Horaven the Hero. Don't change his life