Mathmech Diameter [ROTD-EN028] Common P-017 or "Ryouma Mogami" from your

or "Ryouma Mogami" from your hand without paying the cost

Duskwalker" once per turn

• 1–7 Cards of rarity Rare or higher in every CLB Set Booster

including a WATER monster

Set: Storm of Ragnarok Card type: Effect Monster Rarity: Super Rare Attack: 1800 Defense: 500 If you control a face-up "Six Samurai" monster

Mathmech Diameter [ROTD-EN028] Common P-017 or "Ryouma Mogami" from yourSet: Rise of the Duelist Card type: Tuner Effect Monster Rarity: Common Attack: 1000 Defense: 1500 When this card is Normal Summoned: You can target 1 Level 4 Cyberse monster in your GY; Special Summon it, but it cannot activate its effects. A "Mathmech" monster that was Synchro or Xyz Summoned using this card on the field as material gains the following effect. Once per turn, during the turn this card was Special Summoned, when your opponent