Deadbridge Chant is a mythic Enchantment card from Dragon's Maze (DGM), collector number 63. Current market price: $0.52 (foil $5.88), 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.