Thunderspells, Mad Mage

Instant and sorcery spells you cast cost {1} less to cast.

Whenever you cast an instant or sorcery spell, choose one that hasn't been chosen—
•Scry 3, draw a card, then discard a card.
•Return another target nonland permanent to its owner's hand.
•Deal 5 damage to any target.
{bull}Sacrifice all nonland permanents you control other than Thunderspells.