Swamp Cradle enters the battlefield tapped unless you sacrifice an artifact creature.
: Add to your mana pool. Return Swamp Cradle to its owner's hand.
: Swamp Cradle becomes a 2/2 black Zombie creature until end of turn. It's still a land.
: Add 
to your mana pool. Return Swamp Cradle to its owner's hand.
: Swamp Cradle becomes a 2/2 black Zombie creature until end of turn. It's still a land.
