Dance of Many is a rare Enchantment card from Secret Lair Drop (SLD), collector number 442. Current market price: $3.40 (foil $4.32), TCGplayer market prices via Scryfall.
When this enchantment enters, create a token that's a copy of target nontoken creature. When this enchantment leaves the battlefield, exile the token. When the token leaves the battlefield, sacrifice this enchantment. At the beginning of your upkeep, sacrifice this enchantment unless you pay {U}{U}.