Garruk, Ulvenwald Slayer

Deathtouch
Emerge {4}{b}{g}
When you cast Garruk, Ulvenwald Slayer, if you paid its emerge cost, it gains double strike.
Emerge costs you cast cost {1} less to cast.
Whenever you sacrifice a green or black creature to cast a spell with emerge, each opponent loses 1 life and discards a card.