Triskaidekaphobia is a rare Enchantment card from Shadows over Innistrad Promos (PSOI), collector number 141s. Current market price: — (foil $1.63), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, choose one — • Each player with exactly 13 life loses the game, then each player gains 1 life. • Each player with exactly 13 life loses the game, then each player loses 1 life.