Combo · ENGINE

Rumble, Scrapper × two Blue Sentinels — three 4-Might Mechs and six Power every Hold

3 cards · mind · verified

Pieces

• Rumble, Scrapper ×1 SFD-089 · engine · mind

  Your Mechs have +1 Might (including me). When I hold, play a 3 Might Mech unit token to your base.

• Blue Sentinel ×2 UNL-087 · engine · mind

  [Shield 2] (+2 Might while I'm a defender.) Your hold effects for holding here trigger an additional time. When I hold, [Add] 1 Power of any domain at the start of your next Main Phase. (Abilities that add resources can't be reacted to.)

Payoff

Deck

• Mono-Mind. Every legend with Mind in its pair can run all three cards (103.1.b.3), which is the widest identity of any entry in this walk.

Prerequisites

• Three Mechs a turn, and they are 4 Might each, not 3. 187.4 defines the token — 'A 3 [M] Mech token is a domainless unit token with 3 Might and the Mech tag' — and Rumble's own static 'Your Mechs have +1 Might (including me)' therefore reaches every one of them by tag, with no walk, no play trigger and no cost. The arithmetic is 1 hold effect × (1 + 2 Sentinels) = 3 executions, R1 = A with stacking.
• SIX RAINBOW POWER A TURN IS THE HALF NOBODY PRICES. Each Blue Sentinel's own 'When I hold, [Add] rainbow at the start of your next Main Phase' is itself one of your hold effects at that battlefield, so each of the two fires three times: 2 × 3 = 6 rainbow. It survives 167 because of the Main Phase's own task order — 316.3 empties every Rune Pool first, and 316.4 is where 'at the start of Main Phase game effects take place'. Against #44's measured free floor of 2 Power a turn, this is a tripling.
• The Mechs are born at your BASE and stay there unless you walk them, which is #48's bottleneck in its plainest form: they enter exhausted (143.4), so 144.2's exhaust cost cannot be paid on the turn they appear, and they walk at the NEXT Main Phase — all of them at once, as one game action (144.3, shared destination 144.3.a). SFD-171 Renata Glasc, Industrialist removes the delay (R25 = A) at the cost of adding Order to the identity; the entry does not declare her, because the point of this row is that it is mono-Mind.
• The garrison is 3 units and 12 Might before any Mech arrives (Rumble 4 + 1 = 5 as a Mech himself, two Sentinels at 4, 6 each while defending under [Shield 2]). The engine dies the moment the battlefield does, and it produces nothing on the turn it is assembled: 13 Energy and 3 Mind Power buys the first Hold, not the first Mech.
• This is a feeder, not a finisher. It composes with any consumer of token-body-engine — ready-recruits-grand-plaza is NOT one of them here, because 485.4.a puts only one of your three battlefields into play and this line already needs the Sentinels' battlefield to be the one you Hold. Its natural consumers are the ones that eat bodies where they stand.

Steps

1. Get Rumble, Scrapper (5 Energy + 1 Mind Power) and two Blue Sentinel (4 Energy + 1 Mind Power each) onto one battlefield and establish Control of it.
2. Survive to your Beginning Phase. Scoring Step (315.2.b.2): you Hold, scoring the ordinary 1 point (471.1, capped by 470).
3. Rumble's hold effect is one of your hold effects for holding here, so it fires 1 + 2 = 3 times: three 3-Might Mech unit tokens to your base, each at 4 Might under Rumble's static.
4. Each Sentinel's own hold effect fires three times as well: six rainbow Power arrives at 316.4 of your Main Phase, after 316.3 has emptied the pool.
5. Main Phase: the Mechs made last turn are ready (315.1.b) and standard-move to a battlefield as one action (144.3); this turn's three are exhausted and wait a turn.
6. Repeat every turn the garrison survives.

Per iteration

+3 Mech unit tokens at 4 Might and +6 rainbow Power per Hold

How it ends

engine — an unbounded 4-Might body count plus six Power a turn; it scores nothing by itself

Sources

Walked here, in this project

• Walk of the unwalked partners of the 66 proven synergy rules, rule blue-sentinel-hold 2026-09-06 record

Walked against Core Rules 2026-07-16

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