Gluttonous Malediction

Enchant player
Whenever enchanted player casts a spell, they
create X Food tokens, where X is that spell's converted mana cost. (They're artifacts with
"{2}, {t}, Sacrifice this artifact: You gain 3 life.)
At the beginning of enchanted player's upkeep,
if they have 40 life or greater or control ten or
more Foods, they lose the game.