March of Swirling Mist is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
As an additional cost to cast this spell, you may exile any number of blue cards from your hand. This spell costsless to cast for each card exiled this way. Up to X target creatures phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)
Complete guide
March of Swirling Mist is a versatile blue instant from Kamigawa: Neon Dynasty that offers unparalleled utility for both protection and disruption. By manipulating the state of existence for creatures on the battlefield, this spell allows you to bypass blockers or shield your most important units from removal.
Exiling for Value
The first unique feature of March of Swirling Mist is its alternative cost. As you cast the spell, you may exile any number of blue cards from your hand to reduce the cost by {2} for each card. While you cannot reduce the total cost below a single blue mana ({U}), this allows you to cast a very high 'X' value even when your mana pool is low. Remember that the mana value of the spell on the stack is still X plus one, regardless of how many cards you exiled to pay for it.
How Phasing Works
When a creature phases out, it is treated as though it does not exist. It remains on the battlefield, but it cannot be targeted, its static abilities stop functioning, and it cannot attack or block. Auras and Equipment attached to the creature phase out with it and will return still attached. Because the creature never technically 'leaves' the battlefield, no 'enters the battlefield' or 'leaves the battlefield' triggers will occur.
Timing and Resolution
Targeted creatures will phase back in at the beginning of their controller's next untap step, just before they untap their permanents. A key benefit of phasing is that creatures do not suffer from summoning sickness when they phase back in; if they were already under your control since the start of your previous turn, they can attack or tap immediately.
Common Pitfalls
A common mistake is assuming phasing triggers 'dies' or 'leaves the battlefield' effects; it does not. Additionally, if an opponent uses a spell like Counterspell on March of Swirling Mist, any cards you exiled as an additional cost remain exiled—you do not get them back just because the spell failed to resolve.
Interaction examples
An Offer You Can't Refuse
CounterspellIf you cast March of Swirling Mist choosing X=3 and exile two blue cards to pay for it, the spell's mana value on the stack is 4. Your opponent can use Counterspell to stop the effect entirely. If they instead use An Offer You Can't Refuse, your spell is countered and you will create two Treasure tokens, but the blue cards you exiled to cast the March are gone forever.
Suppose your opponent targets your best creature with a removal spell. You cast March of Swirling Mist with X=1, targeting your own creature. Your creature phases out and 'ceases to exist' for the moment. The opponent's removal spell now has an illegal target and will fizzle (be removed from the stack with no effect) unless they use their own Counterspell to stop your March.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : March of Swirling Mist
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
Phased out permanents are treated as though they don't exist. They can't be the target of spells or abilities, their static abilities have no effect on the game, their triggered abilities can't trigger, they can't attack or block, and so on.
No other card is named in this ruling.
- #2· Wizards of the Coast
As a creature is phased out, Auras and Equipment attached to it also phase out at the same time. Those Auras and Equipment will phase in at the same time that creature does, and they'll phase in still attached to that creature.
No other card is named in this ruling.
- #3· Wizards of the Coast
Permanents phase back in during their controller's untap step, immediately before that player untaps their permanents. Creatures that phase in this way are able to attack and pay a cost of
during that turn. If a permanent had counters on it when it phased out, it will have those counters when it phases back in.No other card is named in this ruling.
- #4· Wizards of the Coast
An attacking or blocking creature that phases out is removed from combat.
No other card is named in this ruling.
- #5· Wizards of the Coast
Phasing out doesn't cause permanents to leave or re-enter the battlefield, so no “leaves the battlefield” or “enters the battlefield” abilities will trigger.
No other card is named in this ruling.
- #6· Wizards of the Coast
Any continuous effects with a “for as long as” duration, such as that of Mind Flayer, ignore phased-out objects. If ignoring those objects causes the effect's conditions to no longer be met, the duration will expire.
No other card is named in this ruling.
- #7· Wizards of the Coast
Choices made for permanents as they entered the battlefield are remembered when they phase in.
No other card is named in this ruling.
- #8· Wizards of the Coast
If an opponent gains control of one of your creatures, that creature phases out, and the duration of the control-change effect expires before it phases back in, that creature phases in under your control as that opponent's next untap step begins. If they leave the game before their next untap step, it phases in as the next untap step begins after their turn would have begun.
No other card is named in this ruling.
- #9· Wizards of the Coast
You may exile more cards than necessary for March of Swirling Mist's first ability, but you can't reduce the mana it costs to less than
this way.No other card is named in this ruling.
- #10· Wizards of the Coast
The mana value of March of Swirling Mist while it's on the stack is the value chosen for X plus 1, no matter how much mana you actually paid to cast it.
No other card is named in this ruling.
Legal formats
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