Alasa, the Rising Storm

+1: Discard a card at random, then draw a card. If an instant or sorcery spell is discarded this way, draw two cards instead.
-2: Exile any number of instant and sorcery spells from your graveyard. Alasa deals damage to target creature equal to the number of spells exiled.
-6: You get an emblem with "Instant and sorcery spells you own have flashback. The flashback cost is equal to its converted mana cost."