Ryntic, The Forgotten King

Ryntic, The Forgotten King costs {1} less to cast
for each permanent you've returned from your
graveyard to the battlefield this game.
{t}, Pay X life, Choose target permanent in your
graveyard with converted mana cost X: You may
play it this turn.
"Ignorance is bliss, they all say... well the rest of
their short life will be blissful... that's for sure."