Smothering Tithe

Whenever an opponent draws a card, that player may pay . If the player doesn't, you create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

"They laughed with glee as the pixie spun gold from straw. They smiled and shrugged when their curtains and clothes were next on the wheel. Then he grabbed their hair."

—The Goose Mother and Other Tales