Last Chance {R}{R}
Sorcery
Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.
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Cards that do something similar expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Final Fortune 100%
$17.80#1509
"Take an extra turn after this one. At the beginning of that turn's end step, you lose the game."
Warrior's Oath 100%
$17.31#7250
"Take an extra turn after this one. At the beginning of that turn's end step, you lose the game."
Alchemist's Gambit 100%
$0.26#10381
"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.]"