Byode, Inverse Sun — 2021 Heroes of the Realm #3

+2: Mill three cards, then return any number of cards from different Universes milled this way from your graveyard to your hand.

-X: Choose a Universe you haven't chosen this way this game. You may cast a spell from that Universe with mana value X or less from your hand without paying its mana cost.

Byode, Inverse Sun can be your commander.

Your deck can include Universes Beyond cards of any color identity.