Andrios, Roaming Explorer

Flying, deathtouch Whenever Arteeoh deals combat damage to a player, you may exchange control of two other target artifacts. When you do, create a token that's a copy of target artifact you don't control, except it's a 1/1 green Squirrel creature token in addition to its other colors and types.

+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.