At the beginning of your end step, create a Treasure token for each creature that died this turn. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
Mahadi, Emporium Master has 3 listed printings; the most valuable is the Foil Etched printing from CLB at US$2.56 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
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