Book of Moon [OP13-EN001] Ultimate Rare SV057 You can only activate 1

You can only activate 1 "Cynet Backdoor" per turn

Set: Duel Terminal 6 Card type: Continuous Spell Rarity: Common Attack: 0 Defense: 0 When one or more face-up "Vylon" Equip Cards you control are destroyed (except during the Damage Step): You can Special Summon an equal or lower number of "Vylon" Tuner monsters from your Deck

Set: League & Championship Cards Type: Supporter Rarity: Holo Rare

your opponent's monster cannot target this card for attacks

inflict piercing battle damage

Book of Moon [OP13-EN001] Ultimate Rare SV057 You can only activate 1Set: OTS Tournament Pack 13 Card type: Quick Play Spell Rarity: Ultimate Rare Target 1 face up monster on the field; change that target to face down Defense Position.