Kai-Za, Forest Guardian

+2: Create two 2/2 Willow spirit tokens with flying.
-3: Exile the top card of target players library, until the end of turn you may spend mana as though it were of any colour to cast it.
-11: Sacrifice four willow spirit tokens, you get an emblem with "Spirit creatures you control get +2/+4, non-spirit creatures get -2/-1"