Darkel, the Soul Snatcher

As long as it's in your hand, your cards cannot be discarded or destroyed.
{b}{b} — Create a 2/2 Zombie token with a life
drain. You take one Undead card from your
graveyard.
{5} — The target creature takes 1 damage. If it survives, you return it to the owner's hand. If he
doesn't play it the next move, he throws all the creatures out of his hand, you can take an unlimited number of creatures thrown into his hand.