During either player's turn, when your opponent activates a card or effect: You can send this card from your hand or field to the Graveyard, then target 1 "Subterror" monster you control; negate the activation, then change the targeted monster to face-down Defense Position. You can target 1 face-up monster you control; change it to face-down Defense Position, and if you do, Special Summon 1 "Subterror" monster from your hand or Graveyard, in face-up or face-down Defense Position. You can only use each effect of "Subterror Fiendess" once per turn.
Near Mint Unlimited - $0.30
Near Mint 1st Edition - $0.40
Lightly Played Unlimited - $0.20
Lightly Played 1st Edition - $0.30
Moderately Played Unlimited - $0.20
Moderately Played 1st Edition - $0.30
Played Unlimited - $0.20
Played 1st Edition - $0.30