Combo · ENGINE

Keeper of Masks is three [Temporary] bodies in one card — Petal Pixie's battlefield costs 12 damage to clear

3 cards · mind + calm · verified

Pieces

• Petal Pixie ×1 UNL-076 · payoff · mind

  I have +1 Might for each of your units with [Temporary] at my battlefield.

• Keeper of Masks ×1 UNL-081 · enabler · mind

  [Hidden] (Hide now for 1 Power of any domain to react with later for 0 Energy.) [Temporary] (Kill me at the start of my controller's Beginning Phase, before scoring.) When you play me, play two Reflection unit tokens here. Then do this: They become copies of me.

• Bashful Bloom ×1 UNL-189 · legend · calm/mind

  4 Energy, Exhaust: Play a ready 3 Might Sprite unit token with [Temporary]. This ability costs 1 Energy less for each friendly unit with [Temporary].

Payoff

Deck

• Bashful Bloom (UNL-189) IS the legend, and Petal Pixie and Keeper of Masks are both mono-Mind, inside her Calm/Mind identity (103.1.b.3).
• Petal Pixie has to be standing AT a battlefield you control. At your base her referent returns null (359.3.f.2.a) and she is a plain 2 Might body.

Prerequisites

• THE ARITHMETIC IS DAMAGE TO CLEAR, NOT MIGHT, AND 143.2.a IS WHY. 'If a Unit ever has nonzero damage marked on it equalling or exceeding its Might, it is Killed' — so a 0 Might Reflection is not free, it costs the attacker 1. With 465.2.c.3 forcing lethal in full onto one unit at a time and 465.2.c.4 capping each at the minimum, the attacker's bill is the sum of those minimums. Bare: Petal Pixie M2, summed defending Might 2, clear for 2. One Keeper (E2): Pixie M5 + Keeper M1 + two Reflections M0, summed Might 6, clear for 8. Keeper then the legend's Sprite (E2 + E1): Pixie M6 + Keeper M1 + 2x M0 + Sprite M3, summed Might 10, clear for 12. Ceiling with three Keepers then the Sprite (E6 + E0): Pixie M12 + 3x M1 + 6x M0 + Sprite M3, summed Might 18, clear for 24.
• PLAY THE KEEPERS BEFORE THE LEGEND'S ABILITY. Bashful Bloom's discount counts friendly units with [Temporary] at the moment she is activated, so three bodies take her from 4 Energy to 1 and nine take her to 0. 356.4.e scopes a minimum to the discount that states one, and she states none. Same reading leblanc-bashful-bloom-trevor-plaza already runs.
• 466.3.a IS THE WIN CONDITION AND IT ONLY NEEDS ONE SURVIVOR: a player wins the combat if they 'are the only Player that has units remaining at this battlefield during this step'. 465.2.b sums the Might of all Defending Units and does not filter by state, so 143.4 ('Units enter the Board exhausted') costs this line nothing — the bodies defend the turn they arrive.
• THE WALL NEVER HOLDS, AND THAT IS THE POINT. 816.1.b kills every [Temporary] body 'at the start of this permanent's controller's Beginning Phase, before scoring', so the whole garrison survives the opponent's entire turn and then vanishes before the Scoring Step (315.2.b.2). Petal Pixie is not [Temporary]: she stays, at M2, and the Hold happens as normal (469.2). The exposure to declare is the mirror of it — if Petal Pixie dies in combat and only [Temporary] bodies survive, they all die at your Beginning Phase and 323.6 strips your control before scoring, so you Hold nothing.
• THE [HIDDEN] ROUTE PUTS THE WALL UP INSIDE THE OPPONENT'S ATTACK, FOR 0 ENERGY. 811.1.b: hide the Keeper for 1 rainbow Power at a battlefield you control, and 'Beginning on the next turn, this gains [Reaction] and you may play this, ignoring its base cost'; 811.6 and 813.1.c.1 let a Reaction card be played in any Closed State on any player's turn. 811.1.d.1 forces him to that battlefield and 811.1.d.3 forces the two Reflections there too ('If a hidden spell or a play effect of a hidden permanent causes you to play a unit, you must choose to play that unit at that battlefield'). The three bodies still fight: 319.6 makes a Cleanup outstanding after Game Objects enter the Board, and 323.2.a hands them the Defender designation there — 464.2.c.3.a says the same from the other side — all before 465.2 resolves damage 'when the Showdown closes'. Same window keeper-of-masks-flurry-plaza-window uses.
• THREE COSTS OF THAT ROUTE. Only ONE card may be hidden per battlefield (811.1.b, 'that doesn't already have a facedown card hidden there'), so at most one of the three Keepers arrives this way and the other two pay 2 Energy each. The rainbow Power is spent a turn early. And 323.7 — 'Remove all Hidden cards from all Battlefields that are not controlled by the same player and place them in their owner's Trash' — trashes it if that battlefield changes hands first.
• IT CANNOT ATTACK. Petal Pixie's bonus reads 'at my battlefield', so moving her leaves the count behind; the Keeper and its Reflections enter exhausted (143.4) and cannot pay 144.2 that turn, and 144.4.c keeps a Standard Move off battlefield-to-battlefield without [Ganking]. This is a defensive engine and nothing in it scores.
• DO NOT ADD UNL-090 LeBlanc, Everywhere at Once. With the [Temporary] trigger switched off (R10 = A) the bodies accumulate and Petal Pixie grows permanently — but that is leblanc-bashful-bloom-trevor-plaza's engine, which already names Petal Pixie as a rider. The two entries are kept apart on purpose.
• 709 fires once: Petal Pixie 'becomes Mighty' crossing 2 to 5, and its own worked example says 'A Unit with Might 5 that gets +1 does not become Mighty, because it was already Mighty' — a second Keeper does not re-fire it.
• Overlap declared: UNL-081 is already in gutter-palace-keeper-time-warp, leblanc-temporary-plaza and keeper-of-masks-flurry-plaza-window, all ALT_WINs that count BODIES for The Grand Plaza or a hand size. This entry is the first to spend him on MIGHT. UNL-189 is already the legend of leblanc-bashful-bloom-trevor-plaza and keeper-of-masks-flurry-plaza-window. UNL-076 appears in no entry's uses.
• WHERE THE TOKEN'S [Temporary] COMES FROM, ADDED BESIDE 816.1 RATHER THAN INSTEAD OF IT (#204, from #187 batch 18). This entry sources the keyword to the 816.1 block, which is correct and says what [Temporary] DOES. What it does not say is that the effect which created the token may attach it; that is 184.2's sibling, 184.3 - 'The effect may grant temporary abilities or modifications to the token' - cited by nothing in 766 entries. It matters here because the grant is the PAYOFF rather than a drawback, so the paragraph licensing it is load-bearing. 816.1 stays exactly where it is.

Steps

1. Petal Pixie stands at a battlefield you control (E2, and 355.2.a makes a battlefield you control a valid play location for her).
2. Every turn from then on: activate Bashful Bloom — 4 Energy, exhaust — for a ready 3 Might Sprite with [Temporary]. Her ability names no location, so 355.2.a puts it at that same battlefield. Petal Pixie is M3 and the garrison costs 6 to clear.
3. On the turn it matters, play Keeper of Masks at that battlefield FIRST: 2 Energy, or 0 if he was hidden there (811.1.b) and is being played as a [Reaction] inside the opponent's own attack (813.1.c.1). His trigger plays two Reflection tokens 'here' (359.3.f.2) and they become copies of him, so three [Temporary] bodies land at once.
4. Petal Pixie is now M5. Then activate Bashful Bloom, whose ability now costs 1 Energy: the Sprite takes her to M6 and the garrison to 10 summed Might, 12 damage to clear.
5. At the start of your next Beginning Phase every [Temporary] body dies before scoring (816.1.b). Petal Pixie is back to M2, still there, and still Holds. Go to step 2.

Per iteration

one 3 Might [Temporary] Sprite per turn for 4 Energy (1 while a Keeper is out), each worth +1 Might on Petal Pixie; a Keeper is a further +3 Might and three bodies for 2 Energy

How it ends

engine — the wall dies at the start of your own Beginning Phase before scoring (816.1.b) and the legend rebuilds one body of it every turn; the Keeper half is capped at 3 copies (103.2.b), of which at most one may come from Hidden per battlefield (811.1.b). Nothing here scores.

Sources

Published elsewhere

• Combo hunt: uncatalogued mind units — issue #150 (GitHub) 2026-09-06
• Riftbound Core Rules, Last Updated 2026-07-16 (data/Riftbound-Core-Rules-2026-07-16.txt) 2026-07-16

Walked here, in this project

• Hand walk 2026-09-06 2026-09-06 record

Walked against Core Rules 2026-07-16

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