Whenever a creature an opponent controls dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
At the beginning of your upkeep, if you control ten or more Treasures, you win the game.
Treasure
Format Legality
Standard Not_legal
Pioneer Legal
Modern Legal
Legacy Legal
Vintage Legal
Commander Legal
Pauper Not_legal