Arne's Last Judgement

(Arne's Last Judgement is all colors. You may cast a legendary sorcery only if you control a legendary
creature or planeswalker.)
Choose a nonland permanent of each color. Exile
the rest.
"We no longer care about little details such as who dies
in the end. We will have vengeance against all who
have betrayed and defiled my master."
—Retributionist Arne