When Chapter III of the Saga happens you have to sacrifice a mountain if you have one – "While resolving The First Eruption’s final chapter ability, you must sacrifice one Mountain if able"
What is the actual behaviour of the card?
It is treated as a "may" ability.
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Please provide a list of affected cards
Affects: [The First Eruption]
What is the expected behaviour of the card?
What is the actual behaviour of the card?
Screenshot
Please provide a list of affected cards Affects: [The First Eruption]
Card Images