Guardragon Cataclysm — Ruling

Effetto 0

• You cannot activate this card during the Damage Step.
• Tributing a Dragon-Type monster from your Monster Zone is the cost to activate this card. (You can also Tribute a face-down Defense Position Dragon-Type monster.)
• This card targets a total of 2 cards on the field. (You cannot target this card itself.)
• Both targeted cards are destroyed simultaneously.