Determine

08/10/2026

Cancelation must be immediate: a wake can be used in the "as played" window, but a reaction to "unlock and attempt to block" cannot. [LSJ 20021011]

08/10/2026

Can be used to cancel all action cards, including employ retainer, recruit ally and political action. [ANK 20200813-2]

08/10/2026

Cannot cancel cards that are not played from the hand in the normal fashion (e.g. can't cancel allies played via {Piper}). [RTR 20001020]

08/10/2026

If an action is canceled, it is not performed and the minion is free to attempt the same action again. [RBK cancel-a-card]

08/10/2026

If a limited effect is canceled (bleed, additional strike), then the limit is not triggered and another limited effect can be used. [LSJ 20030224]

08/10/2026

If the canceled card had a "do not replace until" clause (or alternate replacement like {Steely Tenacity}), that clause is canceled as well and the card is replaced normally. [LSJ 20080630] [LSJ 20011023]

08/10/2026

The canceled card has still been played. The same reaction or modifier cannot be played again by the same minion. Any card which text prohibits to play more than once cannot be played again. [ANK 20190104] [RBK cancel-a-card] [LSJ 19980212]

08/10/2026

Cards are not replaced during the "as played" window. The cancelation must be played immediately: no other effects can be used, except for wakes (eg. neither {The Barrens} nor {Dreams of the Sphinx} can be used). [LSJ 20061207] [RBK playing-a-card] [LSJ 20061013]