Hades, God of the Underworld

Immortal (If this creature is not on the battlefield
or in your hand, return it to the battlefield tapped)
Any time a creature you don't control dies, deal 1 damage to each opponent.
{b}{b}, {t}: Put target creature you don't control in
your graveyard. That creature is now under your control.
{b}{b}, {t}: Return target creature in your
graveyard to the battlefield tapped. Sacrifice it at
the end of this turn.