Activate 1 of these effects, also, after that, Set this card face-down instead of sending it to the Graveyard.
* Change 1 Set "Subterror" monster on the field to face-up Attack or Defense Position.
* Change 1 face-up "Subterror" monster on the field to face-down Defense Position.
* ATK and DEF of 1 "Subterror" monster on the field become equal to its combined original ATK and DEF until the end of this turn.
* This turn, activated effects of "Subterror" cards cannot be negated.
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