Combo · ENGINE

Ava Achiever × three Svellsongur — eight free Hidden plays on one attack

4 cards · mind + calm · verified

Pieces

• Ava Achiever ×1 OGN-107 · engine · mind

  When I attack, you may pay 1 Mind Power to play a card with [Hidden] from your hand, ignoring its cost. If it's a unit, play it here.

• Svellsongur ×3 SFD-059 · engine · calm

  [Equip] 1 Energy + 1 Calm Power (1 Energy + 1 Calm Power: Attach this to a unit you control.) As this is attached to a unit, copy that unit's text to this Equipment's effect text for as long as this is attached to it.

Payoff

Deck

• Legend domains must cover Calm and Mind — OGN-255 Nine-Tailed Fox, SFD-189 Fire Below the Mountain, UNL-189 Bashful Bloom, VEN-145 Curator of the Sands.

Prerequisites

• EVERY [Hidden] CARD BECOMES A FLAT ONE MIND POWER, EIGHT TIMES OVER. That is ava-achiever-hidden-discount's own finding — 811.1.a scopes the keyword to Spells, Units and Gear, so a 6-Energy Hidden spell and a 1-Energy Hidden unit both cost the same 1 Mind Power through Ava — and eight instances turn one attack into eight free plays. The Hidden package is 15 units and 2 gear plus the spells, so the hand is the only real limit.
• THE CAP IS THE POWER, AND IT IS EIGHT MIND POWER IN ONE TURN. Against #44's measured free floor of 2 Power a turn (164.2.b carries no exhaust, so a rune already spent for Energy still pays Power), three or four plays is the honest setting without a Power engine behind it. The entry declares the eight because that is the mechanism, and states the cost in the same breath.
• IT PLAYS FROM HAND, NOT FROM FACE DOWN, and that is a hard exclusion rather than a footnote. 811.1.c.1: 'Hide is not a subset of Play.' The Broker and Ember Monk families watch 'a card played FROM FACE DOWN' (811.1.c.3) and none of them fires here; the two payoff sets are mutually exclusive, and black-market-broker-ember-monk-hidden is the other side of the same coin.
• IT ALSO SIDESTEPS 811.1.d.2. A card played from face down may only target at the battlefield it was hidden at; a card played from hand carries no such restriction, so a Hidden removal spell routed through Ava reaches anywhere its own text allows. The compensation is that it costs an attack.
• AN ATTACK MEANS A REAL COMBAT. 383.4.e places an attack trigger when a unit gains the Attacker designation, and entering an EMPTY enemy battlefield gives none (807.1.d, 461) — so this engine is worth nothing against an opponent who keeps no garrison, and Ava is a 4-Might body walking into one. Svellsongur is M+0 (137.3), so the gears do not help her live, and 137.3.a strips all eight instances the moment she dies.
• Cost, counted whole: Ava 5 Energy; each Svellsongur 3 Energy + 1 Calm Power to play PLUS 1 Energy + 1 Calm Power to [Equip]. 17 Energy and 6 Calm Power to assemble, then 1 Mind Power per card cast.

Steps

1. Play Ava Achiever (5 Energy) and attach Svellsongur A, B and C to her in that order: 2, then 4, then 8 instances of her attack trigger (434.1.c, 476.1, 477.2.c, 479.1, 480.3; R6 = A).
2. Hold a hand of [Hidden] cards — the keyword is on 15 units, 2 gear and a spread of spells across all six domains, and Ava ignores every printed cost.
3. Move her to an OCCUPIED enemy battlefield so she gains the Attacker designation (464.2.c.1, 464.2.c.3). An empty one gives no designation at all (807.1.d, 461) and the whole engine misfires.
4. The eight instances are placed together. Resolve them one at a time: for each, pay 1 Mind Power to play a [Hidden] card from your hand for free, units landing at that battlefield.
5. Stop when the Power or the hand runs out. Repeat next turn once Ava has readied at Awaken (315.1.b) and there is a garrison to attack.

Per iteration

up to 8 [Hidden] cards played free per attack, at 1 Mind Power each

How it ends

engine — it converts a hand of Hidden cards into a single explosive turn; it scores nothing by itself

Sources

Walked here, in this project

• Walk of the unwalked partners of the 66 proven synergy rules, rules svellsongur-copy and ava-achiever-hidden-discount 2026-09-06 record

Walked against Core Rules 2026-07-16

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