Scourge of the Woods

Flying
When you cast a creature that's a Demon, Horror, Nightmare or Beast, draw a card.
When you draw a card, put a +1/+1 counter
on the Scourge of the Woods.
{b/g}{b/g}{b/g}{t}, Pay 3 life, discard a card: Destroy
all creature that isn't a Demon, Horror, Nightmare or Beast. they can't be regenerated.