Last Updated: 2026-10-09

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427.1. Buffing is the action of placing a Buff counter on a Unit. See rule 701. Buffs for more information.

427.1.a. A Buff is also an object.
427.1.b. To Buff a unit, place a Buff Counter on it if it does not have one already
427.1.b.1. If the unit already has a Buff Counter on it, it does not get another one.
427.1.b.2. Some effects may grant a Game Object permission to be Buffed multiple times. Such an effect ignores this restriction.
427.1.c. Units with Buff Counters can still be chosen for actions that Buff units, but will not be Buffed as part of the execution. Example: A spell reads "Buff a unit. Then, if it was buffed this way, draw a card." It will place a buff counter on a unit that has no buff counter, and then its controller will draw a card. However, if the player chooses a unit with a buff counter on it already, then the card will not be drawn. Example: A unit reads "When you buff me, ready me." If that unit is chosen for a game effect that would buff it and it is already buffed, its ability will not trigger.
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