Zed, Swiftblade Sneak

Partner with Sophia, Grim Pyromancer (When this creature enters the battlefield, target player may put Sophia, Grim Pyromancer into their hand from their library, then shuffle.)
Flash
Whenever Zed, Swiftblade Sneak attacks, you may pay {2}{b}. If you do, destroy target creature defending player controls. If a creature died this way, draw a card.