Deadbridge Chant is a mythic Enchantment card from Duskmourn: House of Horror Commander (DSC), collector number 215. Current market price: $0.30, TCGplayer market prices via Scryfall.
When this enchantment enters, mill ten cards. At the beginning of your upkeep, choose a card at random in your graveyard. If it's a creature card, put it onto the battlefield. Otherwise, put it into your hand.