Ral, Resonating Thunder

+1: Until your next turn, Instant and sorcery spells you cast cost 1 generic mana less to cast.
+1: You may cast instant and sorcery cards from your graveyard until end of turn. If you cast an instant or sorcery spell this way, exile it.
-5: Deal X damage to all creatures or all planeswalkers where X is equal to the number of instant and sorceries in your graveyard and in exile.