Vengeful Memories

Each player must have at least one card in their graveyard or counter this spell.
Each player chooses a card in their graveyard and returns it back to their hand. They take damage
equal to that cards converted mana cost and
discards a card.
"In the end it was not god that destroyed me, but
the self-interest of humans just like me!"
-Gilles, Caster of Horrors