Element of the Wild

Whenever it or another creature enters the
battlefield under your control, roll a d4:
If 1: Draw two cards, discard a card.
If 2: Lose 5 life.
If 3: Put a creature with cmc 3 or less or a
land from your hand onto the battlefield.
If 4: Creatures you control gain "{t}: Add
one mana of any color" until end of turn.