
Cleave {4}{U}{U}{R} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)
Take an extra turn after this one. During that turn, damage can't be prevented. [At the beginning of that turn's end step, you lose the game.]
Exile Alchemist's Gambit.
Alchemist's Gambit has 5 printings, first in Innistrad: Crimson Vow (2021). EDHREC ranks it #10,699 among Commander cards. It appears most in Obeka, Brute Chronologist decks (4,666 on EDHREC). It has 7 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.