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Fixed Count Vs. "Choose That Many": When The Exact Number Matters

55_exact_number_all_or_nothing_flexible_amount_targets.md

Fixed-Count vs. "Choose That Many": When the Exact Number Matters

Effects that act on a number of cards split into two shapes, and the shape decides what happens when the board no longer has that number by the time the effect resolves:

  • Fixed count baked into the activation — "target 2…", "banish both", "Tribute 3…". The number is part of the activation requirement; you must meet it to activate, and the effect then resolves on whatever still qualifies.
  • Flexible count set by you, then matched later — "Send any number…; choose that many…". You pick the number at activation (often by paying a variable cost); at resolution the effect must apply to exactly that many, and it can fail wholesale if it can't.

The trap is assuming "do X to N things" always degrades gracefully to "do X to as many as remain." Some wordings do; some are all-or-nothing on the exact number.

S:P Little Knight — a rigid 2-target effect

S:P Little Knight — "When your opponent activates a card or effect (Quick Effect): You can target 2 face-up monsters on the field, including a monster you control; banish both until the End Phase."

The second effect needs exactly two legal targets, and one of them must be a monster you control. Consequences:

  • You cannot activate it unless there are 2 face-up monsters to target and at least one is yours. With only your own lone monster face-up (no legal second target), the effect can't be activated at all.
  • It banishes your own monster too — the symmetric banish is part of the deal, not optional.
  • It is not a clean way to remove a single problem monster; the "including a monster you control" requirement forces collateral on your side.

This is the "fixed count is an activation requirement" pattern: the 2 must exist for you to start. But do not assume the resolution then degrades gracefully. The verb is "banish both" — a single combined action on the pair — so it is all-or-nothing at resolution, the opposite of "resolve as much as possible":

You activate S:P Little Knight's second effect, targeting 2 face-up monsters — one you control and one your opponent controls. In response, your opponent's targeted monster leaves the field (or is flipped face-down), so only your own monster is still a legal target when the effect resolves. What happens? — Answer: Nothing is banished. "Banish both" needs both targeted monsters still present; with only one valid target the effect is not applied at all — it does not banish your remaining monster. The official ruling: if at least one of the targeted monsters is no longer present at resolution, the effect is not applied.

This is the "both"/"and" = all-or-nothing conjunction case, not the per-target degrade case. Contrast an effect that acts on each target independently ("target 2 monsters; destroy them"), which still affects whichever target survives. See Resolve As Much As Possible: "and"/"both" do nothing on partial failure; "also"/"then"/"up to" resolve what they can.

Forbidden Droplet — flexible count, exact match at resolution

Forbidden Droplet — "Send any number of other cards from your hand and/or field to the GY; choose that many Effect Monsters your opponent controls, and until the end of this turn, their ATK is halved, also their effects are negated…"

Here you set the number by how many cards you send to the GY (the cost). At resolution you must choose that many Effect Monsters. Droplet does not target — the monsters are chosen when it resolves, not at activation — so a mismatch is only discovered at resolution.

You send 3 cards to the GY for Forbidden Droplet. In response, your opponent's board shrinks so only 2 Effect Monsters remain when Droplet resolves. What happens? — Answer: The effect does not apply at all. Droplet must choose exactly 3 Effect Monsters; with only 2 available it cannot choose 3, so it resolves doing nothing — no ATK halving, no negation — and the 3 cards you sent as cost are still gone.

So Droplet is all-or-nothing on the exact count, and because it chooses at resolution, over-paying the cost can brick the whole effect. (Contrast a "choose up to that many" wording, which would simply apply to the smaller number.)

The general split

  • "target N … both / all of them" (one combined action on the set) → the count must be met to activate; at resolution it is all-or-nothing — if any targeted card is gone, the effect does nothing ("banish both" banishes neither, not the survivor).
  • "target N … them / those monsters" (acts on each target independently) → the count must be met to activate; then resolves on whatever legal targets survive (the "resolve as much as possible" default).
  • "any number… choose that many" (non-targeting, chosen at resolution) → must apply to exactly the chosen number at resolution, or it does nothing.
  • "up to N" → flexible; applies to as many as are legal, down to zero.

Judge calls to watch for

  • S:P Little Knight's banish needs 2 face-up targets including one you control — it can't snipe a single monster, and it banishes your own monster too.
  • If one of S:P Little Knight's two targets leaves before resolution, the effect is not applied — it banishes neither monster. "Banish both" is all-or-nothing; it does not "resolve as much as possible" onto the survivor. Watch for the inverse misread that keeps the remaining monster banished.
  • Forbidden Droplet does not target and must hit exactly the number of cards you sent; if fewer Effect Monsters exist at resolution, the whole effect fizzles and the cost is wasted. Don't over-send.
  • Distinguish "that many" (exact) from "up to that many" (flexible) from "as many as possible" (degrades). The wording, not intuition, decides whether a shortfall fizzles the effect.

Sources

What's new

  • Added to corpus (restored after a rebase had dropped rulings 42–59).