Black Salvo [TU05-EN015] Common Dark Revelation Volume 2 select 1 face-up Reptile-Type "Worm"

select 1 face-up Reptile-Type "Worm" monster on the field and change it to face-down Defense Position

Set: Dark Revelation Volume 1 Card type: Effect Monster Rarity: Common Attack: 1000 Defense: 1000 When your opponent activates a card that includes an effect whereby your opponent discard from his/her hand

Set: Structure Deck: Machina Mayhem Card type: Effect Monster Rarity: Common Attack: 1000 Defense: 600 You can send 1 face-up "Machina Soldier"

Set: Dark Beginning 2 Card type: Effect Monster Rarity: Common Attack: 1000 Defense: 500 You can flip this card into face-down Defense Position once per turn during your Main Phase

but the equipped monster's DEF becomes 0

Black Salvo [TU05-EN015] Common Dark Revelation Volume 2 select 1 face-up Reptile-Type "Worm"Set: Turbo Pack: Booster Five Card type: Tuner Monster Rarity: Common Attack: 100 Defense: 1100 When this card is Normal Summoned, you can select 1 Level 4 DARK Machine Type monster from your Graveyard, and Special Summon it in face up Defense Position. Its effect(s) is negated.