Revel in Riches [Ixalan]

Set: Ixalan Type: Enchantment Rarity: Rare Cost: {4}{B} Whenever a creature an opponent controls dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")At the beginning of your upkeep, if you control ten or more Treasures, you win the game.