Combo · ENGINE

Exhausting a friendly unit costs nothing on the opponent's turn, because 144.1.b forbids the move and combat never reads the state

6 cards · calm · verified

Pieces

• Meditation ×3 OGN-048 · payoff · calm

  [Reaction] (Play any time, even before spells and abilities resolve.) As an additional cost to play this, you may exhaust a friendly unit. If you do, draw 2. Otherwise, draw 1.

• Playful Phantom ×3 OGN-049 · engine · calm

Payoff

Deck

• Both cards are mono-Calm, so 103.1.b.3 admits any legend with Calm in its pair.
• Neither card is banned or restricted in either format, and neither is a Signature card.
• A READY friendly unit when the spell is played - exhausting requires one, and an already-exhausted body cannot pay.

Prerequisites

• THE ADDITIONAL COST IS FREE ON THE OPPONENT'S TURN, AND THREE PARAGRAPHS SAY WHY. 144.1.b forbids the Standard Move outside your own Main Phase, so a ready body has nothing to spend its readiness on during their turn. Combat does not read the state either: neither 464.2.c.3, which hands out the designations, nor 465.2.b, which assigns damage, filters by exhaustion - an exhausted defender fights at its full Might. And 415.3.a readies it again in your own Awakening. So on their turn the exhaust is a cost you pay with nothing, and Meditation is a flat Draw 2 for 2 Energy at [Reaction] speed (813.1.c.1).
• ON YOUR OWN TURN IT IS NOT FREE, WHICH IS THE OTHER HALF. 144.2 makes exhausting the unit the Cost of a Standard Move and 420.3.a repeats it, so a body you tap for Meditation is a body that does not walk this turn. The rule is simple: cast it on their turn, or on yours only after every move you meant to make.
• 203.3 NEVER BITES, BECAUSE THE COST IS OPTIONAL. 'If the game action associated with a Cost is impossible ... they cannot pay the Cost and they will not execute the linked Effect' - but the card reads 'you MAY exhaust a friendly unit ... Otherwise, draw 1', so an empty board makes it a 2-Energy cantrip rather than an uncastable card. Contrast SFD-044 Legion Quartermaster in this same lane, whose additional cost has no 'may' and whose card is therefore uncastable with no gear out.
• AND A VANILLA BODY IS THE PERFECT FUEL, WHICH TURNS A BLANK CARD INTO A USE. OGN-049 Playful Phantom has no rules text at all - swept, it is one of the very few printed blanks in the domain - so its exhaust has no opportunity cost beyond the Standard Move it was not going to make on the opponent's turn anyway. A 5 Might body that also converts one card into two every time you hold Meditation up is doing more than its stat line.
• THE RATE, WITH THE QUANTITIES DECLARED. 2 Energy for two cards, three times a game (103.2.b), on any turn where a friendly unit is ready - which is every opponent's turn on which your board survived. Against the alternative of casting it on your own turn, the price is one Standard Move.
• WHAT IT IS NOT. Nothing here scores; 469 defines Scoring as Conquer or Hold. And Meditation draws, so 431.1.a applies with an empty deck - two cards is two chances to Burn Out.

Steps

1. Keep a ready body on the board at the end of your turn - a Playful Phantom that has already reached its battlefield is ideal.
2. On the opponent's turn, in any Closed State, play Meditation (2 Energy) under its [Reaction] permission (813.1.c.1).
3. Pay the optional additional cost by exhausting that body: 144.1.b means it had no legal move to make anyway, and neither 464.2.c.3 nor 465.2.b cares about the state in combat.
4. Draw 2. 415.3.a readies the body again at your own Awakening.
5. On your own turn, only tap a unit you have already finished moving - 144.2 makes the exhaust the Standard Move's cost.

Per iteration

two cards for 2 Energy on any opponent's turn, at no cost beyond a Standard Move that was illegal anyway

How it ends

engine only - three Meditations by 103.2.b; nothing here scores, and with an empty deck the second card is a Burn Out (431.1.a)

Sources

Published elsewhere

• Riftbound Core Rules, Last Updated 2026-07-16 (data/Riftbound-Core-Rules-2026-07-16.txt) 2026-07-16
• Card text verbatim from data/corpus_flat.txt (built from Riot's gallery content API) 2026-09-07

Walked here, in this project

• Hand walk 2026-09-07 (docs/phase0/walks/2026-09-07-uncatalogued-calm-mind-order.md, batch 9) 2026-09-07 record

Walked against Core Rules 2026-07-16

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