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TARDIS Bay
Plane — Gallifrey
common
The first spell you cast during each of your turns with mana value 2 or greater has cascade. (When you cast that 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.) When chaos ensues, gain control of target artifact. Then planeswalk.
Card Kingdom
CardmarketSemantic Tags
Exile-based card advantage — exile cards from the top of your library and cast them temporarily. Red's primary draw mechanic.
Cares about or manipulates the top card(s) of your library. Includes scry, surveil, and top-deck payoffs.
Cares about or manipulates the top of library — Sensei's Top, miracles, Future Sight.
Format Legality
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Printings (1)
| Set | Rarity | TCGplayer | Card Kingdom | Cardmarket |
|---|---|---|---|---|
| Doctor Who#601 | common | · | · | · |
Rulings
Cascade 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.
If the card has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.
If a spell has multiple instances of cascade, each one triggers separately.
Due 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.
You exile the cards face up. All players will be able to see them.
If a spell with cascade is countered, the cascade ability will still resolve normally.
When 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.
If 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.
A spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.