Noah, manic gamer

{X}{T}: Roll {Y} d12, where {Y} is equal to {X} minus the amount of life you have lost since your last upkeep step. 1 — Until the next end step, you may cast one spell from exile. 2-7 — Each player loses two life and exiles two cards from their hand. 8-10 — Each player’s life total becomes 40. 11 — Each player passes their library to the player on their left. 12 — Each player shuffles their commander into their library, then exiles the top 40 cards of their library. Ignore any remaining die rolls from this ability.