If this card is in your hand or Graveyard: You can discard 1 "Crystron" card, except "Crystron Sulfefnir"; Special Summon this card in Defense Position, then destroy 1 card you control. If this card on the field is destroyed by battle or card effect: You can Special Summon 1 "Crystron" monster from your Deck in Defense Position. You can only use each effect of "Crystron Sulfefnir" once per turn.
![Crystron Sulfefnir [RATE-EN021] Super Rare | Kessel Run Games Inc.](http://kesselrungames.ca/cdn/shop/products/d5fc9ae5-8fbf-5151-8684-d3a0d2e8a00f.png?v=1636082725)
