R.B.

R.B. The Brute Blues is the card the deck is built to resolve. Once live and pointing to at least one R.B. monster, it becomes indestructible by battle or card effects, gains ATK equal to the original ATK of every R.B. monster in its link arrows, and earns a second attack each Battle Phase — a combination that can end a duel in a single turn if the board is cleared ahead of it. Its built-in search adds any R.B. card from the deck on each of your Main Phases, giving the strategy long-term consistency even after its initial setup.

Getting there relies on the archetype's self-Special Summoning clause, shared by Ga10 Cutter, Ga10 Driller, Ga10 Pile Bunker, and VALCan Rocket, each of which drops from the hand for free as long as you control only R.B. monsters or none at all. That clause makes Link climbing fast and largely hand-trap resistant. R.B. Funk Dock kicks off the turn by searching any R.B. card on activation, then replaces whichever monster leaves the field by card effect with a fresh body from the deck, sustaining the stream of material. VALCan Booster bridges the gap to The Brute Blues by fetching an R.B. Spell and repositioning itself to create the link arrows its sister cards need.

Once The Brute Blues is established, the monsters in its zones become interactive threats rather than passive bodies. Ga10 Cutter negates and destroys an opponent's Spell or Trap while linked, Ga10 Driller picks off a monster, and VALCan Rocket clears up to two cards while dealing burn damage, all for LP costs that R.B. Next Phase and the LP-gain clauses on R.B. Operation Test help offset across the game.