Revel in Riches

Celebrare la Ricchezza (Revel in Riches) (it)

Enchantment (CMC 5)
Whenever a creature an opponent controls dies, create a Treasure token. (It's an artifact with ", 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.