Ohroahdia, Heir To Vraska

Deathtouch

Whenever a creature you don't control dies, it becomes a Snakestone artifact token, which comes into play under your control, loses all other abilities, and is no longer a creature. Snakestones have "Sacrifice this Snakestone: draw a card. You lose 1 life."

At the end of your turn, if you control 10 or more Snakestones, you win the game.