The Turtle

+2: All creatures under your control gain +5/+5 until end of turn. They gain Vigilance and Indestructible.
-4: Exile all creatures not under your control. All creatures with converted mana cost 4 come back to the battlefield under your control with Haste.
-12: You gain an emblem with: Every time you play a creature card, summon a 0/+5 Green Turtle Token Creature with Defender.