Arteeoh, Dread Scavenger

Reach As long as Andrios is attacking, tapped creatures you control with base power and toughness 4/3 have base power and toughness 16/9. T: Add WUBRG. Creature spells you spend this mana to cast have their base power and toughness become 4/3.

+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.

+1: Create a 1/1 Human Wizard creature token that's all colors. −3: Choose a card name from among Enlightened Tutor, Mystical Tutor, Booster Tutor, Imperial Recruiter, and Worldly Tutor. Create a copy of the card with the chosen name. You may cast the copy without paying its mana cost. −8: You get an emblem with "At the beginning of your upkeep, if you control twenty or more Wizards, you win the game." Ersta, Friend to All can be your commander.