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.
![Subterror Fiendess [Maximum Crisis] [MACR-EN082] | Gear Gaming Bentonville](http://bentonville.geargamingstore.com/cdn/shop/products/131199_200w.jpg?v=1570625689)
