Cumu, Nature's Champion

+1: Target creature gains haste and gets +1/+1 until end of turn.
+1: Tap a permanent you control, put a 1/1 Squirrel creature token with Haste onto the battlefield. Squirrel creatures get +1/+1 until end of turn.
-2: The next time a creature enters the battlefield under your control, add X mana to your mana pool, where X equals it's converted mana cost.