Smothering Tithe is a mythic Enchantment card from Commander Masters (CMM), collector number 57. Current market price: $58.23 (foil $62.42), TCGplayer market prices via Scryfall.
Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")