Counter target spell unless its controller discards their hand. Transmute {1}{U}{B} ({1}{U}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
"For dim-witted, thick-skulled genetic mutants, they have pretty good aim."
—Sisay, captain of the *Weatherlight*