Arkham Asylum

{t}: Add one mana of any color.
{t}, Sacrifice a creature you control: Return target creature card from your graveyard to your hand.
Whenever Arkham Asylum becomes tapped, it
deals 1 damage to you.
"Sometimes... sometimes I think the Asylum is a
head. We're inside a huge head that dreams us all
into being. Perhaps it's your head."
—Mad Hatter