"Shadow Filament" If this card is put into the Soul of a <Neodragon> from your hand or Deck, you may pay 1 Gauge. If you do, return 1 card from your opponent's field to the bottom of their deck. You can only use "Shadow Filament" once per turn.
If this card is in the Soul of a <Neodragon> on your field, that <Neodragon> gains +2000 Defense and cards in its Soul cannot be sent to the Drop Zone by card effects.
There can only be 1 "Variable Arms, Deus Filament" in the Soul of a <Neodragon> on your field.