Doom of Dimensions

If you control no face-up monsters, or the only face-up monsters you control are "R.B." monsters, you can Special Summon this card (from your hand). You can only Special Summon "R.B. Ga10 Pile Bunker" once per turn this way. When an attack is declared involving an opponent's monster and "R.B. The Brute Blues" that points to this card: You can pay 1500 LP; destroy all cards your opponent controls and this card. You can only use this effect of "R.B. Ga10 Pile Bunker" once per turn.

R.B. Ga10 Pile Bunker

If this card is Normal or Special Summoned: You can send 1 "R.B." card from your Deck to the GY, except "R.B. Lambda Blade". During your opponent's Main Phase, if this card is linked to an "R.B." Link Monster (Quick Effect): You can pay 1400 LP, then target 1 monster your opponent controls; destroy this card, and if you do, take control of that monster, but destroy it during the End Phase. You can only use each effect of "R.B. Lambda Blade" once per turn.

R.B. Lambda Blade

If this card is Normal or Special Summoned: You can target 1 "R.B." monster in your GY, except "R.B. Lambda Cannon"; add it to your hand. While this card is linked to an "R.B." Link Monster: You can pay 1200 LP; destroy this card, and if you do, look at your opponent's hand, then you can Special Summon 1 monster from it to their field, but negate its effects. You can only use each effect of "R.B. Lambda Cannon" once per turn.

R.B. Lambda Cannon

Special Summon 1 "R.B." monster from your Deck, Extra Deck, or GY, with a different name than the cards you control. For the rest of this turn after this card resolves, you cannot Special Summon from the Extra Deck, except Machine monsters with 1500 or less ATK. When your opponent activates a card or effect that targets an "R.B." monster(s) you control: You can banish this card from your GY; negate that effect. You can only use 1 "R.B. Last Stand" effect per turn, and only once that turn.

R.B. Last Stand

When your opponent activates a monster effect, while you control an "R.B." monster: Destroy 1 monster you control, and if you do, negate the activation, and if you do that, destroy that card, then gain 2000 LP. You can only activate 1 "R.B. Next Phase" per turn.

R.B. Next Phase

When this card is activated: You can target 1 Level 3 or higher "R.B." monster in your GY; Special Summon it. You can target any number of "R.B." monsters you control; gain LP equal to their combined original ATK, and if you do, return them to the hand/Extra Deck, then you can Special Summon 1 "R.B." monster from your hand. You can only use this effect of "R.B. Operation Test" once per turn. You can only activate 1 "R.B. Operation Test" per turn.

R.B. Operation Test

2+ monsters, including an "R.B." monster
Gains 500 ATK for each monster you control, except this card. You can only use each of the following effects of "R.B. Shepherd's Crook" once per turn. During your Main Phase: You can Set 1 "R.B." Trap from your Deck or GY. During your opponent's Main Phase (Quick Effect): You can target 3 Level 3 or higher "R.B." monsters in your GY; place 2 on the bottom of the Deck in any order, and if you do, Special Summon the other in Defense Position.