Marsh Crocodile

Crocodilo do Pântano (Marsh Crocodile) (pt)

Creature - Crocodile | Power/Toughness: 4 / 4 (CMC 4)
When Marsh Crocodile enters the battlefield, return a blue or black creature you control to its owner's hand.
When Marsh Crocodile enters the battlefield, each player discards a card.