Your Favorite Character is a rare Legendary Creature — Shapeshifter card from Unknown Event (UNK), collector number RC05c. Current market price: $267.49, TCGplayer market prices via Scryfall.
As the game begins, if Your Favorite Character is your commander, or as Your Favorite Character enters the battlefield if it's not your commander, name a character from the Magic storyline. Choose up to three colors, two creature types, and then two keywords from among vigilance, flying, haste, trample, and menace. Your Favorite Character has the chosen name, types, colors, and keywords.