Grave Creature

You can't summon this card by any means. You
may only summon this card from hand if you
exile 1 Shadow and 1 Radiant creature from your
grave; on top of paying this cards cost.
Once per turn you may use one ability:
Exile 2 cards from your grave: Grant a spell in
grave Flashback equal to its mana cost.
Exile 4 cards from your grave: Draw 1.