Combo · ENGINE
Ezreal, Prodigy under Marai Spire — every E2 [Repeat] in the deck doubles for free
Pieces
- Ezreal, Prodigy ×1
SFD-149 · enabler · chaos
When you play me, discard 1, then draw 2. Optional additional costs you pay cost 1 Energy or 1 Power of any domain less.
- Marai Spire ×1
SFD-211 · battlefield
While you control this battlefield, friendly [Repeat] costs cost 1 Energy less.
- Bellows Breath ×1
SFD-080 · payoff · mind
[Action] (Play on your turn or in showdowns.) [Repeat] 1 Energy + 1 Mind Power (You may pay the additional cost to repeat this spell's effect.) Deal 1 to up to three units at the same location.
Payoff
Deck
- Legend domains cover Mind and Chaos (103.1.b). Four legends do: SFD-199 Prodigal Explorer, OGN-263 Swift Scout, UNL-197 Scorn of the Moon, VEN-151 Soul's Reflection.
Prerequisites
- THE SPIRE IS NOT GUARANTEED TO BE IN PLAY. 485.4.a puts only one of your three battlefields into the game, and 485.5 says a Duel picks it AT RANDOM ('Each player randomly selects one (1) of their three (3) Battlefields'). 1v1 Match play is different: 486.5 says only 'selects', so there you choose it for game 1. Whether a deck may bring three copies of the same battlefield to make the Duel case certain is the open question of issue #35 — the Core Rules never forbid it (103.2 caps copies of a Main Deck card, and a battlefield is not a Main Deck card), but this entry does not assume it.
- MARAI SPIRE MUST BE CONTROLLED. A battlefield you provide at setup is Uncontrolled (190.1), and 190.6.d makes an uncontrolled battlefield's 'you' refer to nobody, so the discount is off until you walk a body there and establish Control (466.5). This is the entry's real cost and it is not a deckbuilding freebie.
- FOURTEEN spells in the pool go to a 0 Repeat cost with Marai Spire plus one Ezreal, not eleven (issue #32 lists fourteen codes and then miscounts them as eleven): SFD-003 Blood Rush (free on the Spire alone, its Repeat is only 1 Energy), SFD-031 Desert's Call, SFD-034 Feral Strength, SFD-040 Thwonk!, SFD-066 Frigid Touch, SFD-080 Bellows Breath, SFD-129 Temptation, SFD-136 Hard Bargain, SFD-151 Bonds of Strength, SFD-182 Danger Zone, UNL-009 Upstage Comedy, UNL-032 Double Trouble, UNL-061 Downstage Dramatics, UNL-134 Existential Dread.
- Six of the fourteen are inside Mind/Chaos: Frigid Touch, Bellows Breath and Downstage Dramatics (Mind); Temptation, Hard Bargain and Existential Dread (Chaos).
- Out of reach even so: SFD-114 Marching Orders (Repeat 3 Energy, falls to 1 with one Ezreal and 0 with two), SFD-023 Piercing Light (2 Energy + Fury Power, one discount short), SFD-077 Rocket Barrage (4 Energy + Mind Power, still 1 Energy with the Spire and THREE Ezreal, because one of the three has to be spent on the Power component).
- SFD-199 Prodigal Explorer as the legend adds a draw: 'exhaust: [Reaction] Draw 1. Use only if you've chosen enemy units and/or gear twice this turn with spells or unit abilities.' Turn it on with TWO different unit-choosing spells in the turn (Frigid Touch, Temptation, Existential Dread, Bellows Breath) — do NOT lean on one Repeated spell counting as twice, which is an unruled question (820.3.a says the spell 'is only Played once' while 820.2 does make two sets of choices). The two-spell route needs no reading at all.
- This is not and cannot be a loop: 820.1.c.3, 'Each Repeat Cost can be paid only a single time.' A 0-cost Repeat buys ONE extra execution per spell, forever, for free — never two.
Steps
- Get Control of Marai Spire (190.1): move a unit there and establish Control, the same work as a Conquer. Until then the discount does nothing (190.6.d).
- Play Ezreal, Prodigy (E3 P1). His own play effect is 'discard 1, then draw 2', so he replaces himself.
- Play any of the fourteen [Repeat] spells and choose to pay the additional cost in step 2 of playing (356.2.b.1). The additional cost is added, then component discounts apply (356.4.c): Marai Spire takes the Energy, Ezreal takes whichever component is left.
- The cost reaches 0. 356.4.f allows that, and 356.4.f.1 keeps it 'paid' because the decision to pay it was made, so 820.1.d.1 executes the spell's instructions a second time on resolution.
Per iteration
one extra execution of a [Repeat] spell per spell played, at zero additional cost
How it ends
engine only — every E2 [Repeat] spell in the deck (and Bellows Breath's Energy+Power one) executes twice for its printed base cost, for as long as you hold Marai Spire; 820.1.c.3 caps it at one extra execution each, so it never loops
Sources
Published elsewhere
- Hunt lens [Repeat]/[Accelerate]/[Add] — issue #32 (GitHub) 2026-09-05
- 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 2026-09-05 2026-09-05 record
How this entry was audited
REFUTE = a refutation pass, with its date and verdict · WOUNDED = the pass found a flaw and the entry was rewritten · BUDGETED = the pass checked the recycle-and-draw ledger · lens = the hunt that proposed it.
HAND-WALKED 2026-09-05 (docs/phase0/walks/2026-09-05-repeat-accelerate-add-candidates.md), issue #32. All card text verbatim from data/corpus_flat.txt; every rule opened in data/Riftbound-Core-Rules-2026-07-16.txt. The strongest citation in the catalogue: rule 356.4.c's own worked example is 'Ezreal, Prodigy reads "optional additional costs you pay cost [1] or [A] less." When playing a Frigid Touch and choosing to pay the additional cost in step 2, as soon as the additional cost is added to the cost of the spell, Ezreal, Prodigy's discount is applied to it.' Riot ruled this exact interaction. TWO REWRITES against the #32 candidate: (1) the Marai Spire discount needs CONTROL of the battlefield (190.1, 190.6.d) — neither rule had ever been cited in this project and the issue asserted the discount as passive from turn one; (2) the issue closed the entry by having one doubled Bellows Breath satisfy Prodigal Explorer's 'chosen enemy units twice', which is an unruled reading, so the entry stands on two different spells instead and no reading is filed. One correction: fourteen free spells, not the eleven the issue counts. Trap check: the [Repeat] family cannot loop (820.1.c.3); no attack trigger so 383.4.e/461 cannot bite; every payment is a Main Phase spell cost so 167 does not bite; no [Temporary], no recall, no rune recycled for Power; exactly one battlefield, so 485.4.a is respected. Added 2026-09-05 after the project registered 485.5/486.5: a Duel selects your one battlefield AT RANDOM, so the Marai Spire half of this line comes online 1 game in 3 there and by choice in 1v1 Match play (486.5). That is a consistency question, not a correctness one — issue #35 — and the entry states it rather than assuming the Spire.
Walked against Core Rules 2026-07-16