Kathari Remnant
Creature — Bird Skeleton
Oracle Text
Flying
: Regenerate this creature.
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Rules for this card
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A keyword ability that may let a player cast a random extra spell for no cost. See rule 702.85, “Cascade.”
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A keyword ability that restricts how a creature may be blocked. See rule 702.9, “Flying.”
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To replace a permanent’s destruction with an alternate sequence of events. See rule 701.19, “Regenerate.”
Rulings (9)
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Wizards of the CoastWhen the cascade ability resolves, you must exile cards. The only optional part of the ability is whether or not you cast the last card exiled.
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Wizards of the CoastIf the card has
in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.
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Wizards of the CoastIf you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs. You can, however, pay additional costs. If the card has any mandatory additional costs, you must pay those to cast the card.
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Wizards of the CoastA spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.
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Wizards of the CoastYou exile the cards face up. All players will be able to see them.
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Wizards of the CoastThe mana value of a split card is determined by the combined mana cost of its two halves. If cascade allows you to cast a split card, you may cast either half but not both halves.
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Wizards of the CoastIf a spell with cascade is countered, the cascade ability will still resolve normally.
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Wizards of the CoastCascade triggers when you cast the spell, meaning that it resolves before that spell. If you end up casting the exiled card, it will go on the stack above the spell with cascade.
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Wizards of the CoastDue to a 2021 rules change to cascade, not only do you stop exiling cards if you exile a nonland card with lesser mana value than the spell with cascade, but the resulting spell you cast must also have lesser mana value. Previously, in cases where a card's mana value differed from the resulting spell, such as with some modal double-faced cards or cards with an Adventure, you could cast a spell with a higher mana value than the exiled card.