Tzeentch, God of Deception

This spell costs {1} less for each mana you have
spent on instant and sorcery spells this turn.
Flying, indestructible
Tzeentch isn't a creature as long as you haven't
cast a noncreature spell this turn.
Instants and sorceries in your graveyard has flashback, where it's flashback cost is equal to its
mana value.