Yubel - The Ultimate Nightmare [PTDN-EN008] Secret Rare Pro Tour Promos Whenever you cast an instant

Whenever you cast an instant or sorcery spell

add up to 2 "Thunder Dragons" from your Deck to your hand

Unlike previous conflicts

If this card is Special Summoned by "Clock Tower Prison": Destroy all monsters you control

Yubel - The Ultimate Nightmare [PTDN-EN008] Secret Rare Pro Tour Promos Whenever you cast an instantSet: Phantom Darkness Card type: Effect Monster Rarity: Secret Rare Attack: 0 Defense: 0 This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except with the effect of "Yubel Terror Incarnate". This card cannot be destroyed by battle. You take no Battle Damage from battles involving this card. If this face up Attack Position card battles an opponent's monster, inflict damage equal to its ATK to your opponent and destroy