Ersta, Friend to All

+1 Create a 1/1 Human Wizard creature token that's all colors. 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. 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.