Crystron Sulfefnir

Level 5 WATER/Machine Effect
2000 ATK / 1500 DEF

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.

Rulings – Yugipedia

Printings:

Raging Tempest: RATE-EN021 (Super Rare) - 2017-02-09
OTS Tournament Pack 27: OP27-EN016 (Common) - 2025-02-27

Prices:

Cardmarket: 0.64 €
TCGplayer: $ 0.39