Combo · ENGINE

One card moves both bodies, and its own parenthetical settles which player the Contested rules make the attacker

6 cards · body + chaos · verified

Pieces

• Void Assault ×3 UNL-202 · payoff · body/chaos

  Move a friendly unit, then move an enemy unit. (If they both move to a battlefield you don't control, you're the attacker.)

• Towering Combatant ×3 UNL-099 · engine · body

  [Shield 2] (+2 Might while I'm a defender.) [Tank] (I must be assigned combat damage first.)

Payoff

Deck

• UNL-202 Void Assault is a SIGNATURE card tagged Kha'Zix, so 103.2.d.2 forces a Kha'Zix legend whose two domains cover body + chaos - and the census prints exactly one such name: UNL-201 / UNL-236 Voidreaver. No other legend can hold this list.
• Neither card is banned or restricted in either format. The spell spends one of the three Signature slots 103.2.d.1 allows; UNL-099 is not a Signature card.
• Two bodies to move, one of them theirs. Both halves are effect moves under 449, so 420.3.a's exhaust and 144.4's destination limits do not apply.

Run play

• the Tank goes in first, or the drag hands them your battlefield

Prerequisites

• THE PARENTHETICAL IS A PRINTED ANSWER TO A RULES QUESTION, AND IT IS WORTH READING TWICE. 190.3.a.1 applies Contested to a battlefield when a unit moves there whose CONTROLLER does not already control it, and 450 says the same from the destination's side; 464.2.c.1 then makes the Attacker 'the player whose unit(s) applied the Contested status'. If BOTH players' units move to a battlefield neither controls, both applied it - and the card resolves the tie itself: '(If they both move to a battlefield you don't control, you're the attacker.)' No reading was needed and none is filed.
• AND THE OTHER DIRECTION IS THE ONE THE CARD DOES NOT SPELL OUT. Move the enemy unit to a battlefield YOU control and the same paragraphs run the other way: THEIR unit applied Contested to a battlefield they do not control, so THEY are the Attacker and you are the Defender (464.2.c.2) - on your own turn. That is the trick this catalogue records on OGN-067 Blitzcrank, Impassive, and Void Assault is a second, cheaper way to set it up, with the added half that your own body can be moved into the same fight in the same card.
• SO ONE SPELL CHOOSES WHICH SIDE OF THE COMBAT YOU ARE ON, WHICH NOTHING ELSE IN THE POOL DOES. Attacking matters for every 'when I attack' trigger and for [Assault] (807.1.c, 807.1.d); defending matters for [Shield] (814.1.c) and for every 'when I defend' trigger. Two Energy and a Power buys the designation you want, and the parenthetical is how you know which you are getting.
• BOTH HALVES ARE EFFECT MOVES, WHICH IS WHY EXHAUSTED BODIES ARE FINE. 449: 'Spells, Abilities, or other effects may cause a Move to occur', with 449.1 leaving the restrictions to the source; 420.3.a puts the exhaust cost on the STANDARD Move alone, so a body that has already acted this turn can still be moved, and 144.4's base-to-battlefield restriction never comes up - this goes battlefield to battlefield with no [Ganking]. 449.2 is the one limit: 'Units cannot Move to a Battlefield that already has units from 2 other players present by any means', which in a Duel (485.1) never applies.
• AND THE ARRIVING BODIES ARE IN THAT COMBAT. 319.6 runs after Game Objects enter or leave the Board, and 323.2.a: 'If there are Units present at the Battlefield the Combat is taking place at, but do not have a designation, they gain the same designation as their Controller now.' 143.4's entering exhausted is irrelevant on defence, because neither 464.2.c.3 nor 465.2.b filters by state.
• THE PARTNER IS A [TANK] BECAUSE THE DEFENSIVE DIRECTION IS THE STRONGER ONE. Dragging one enemy body onto a battlefield you hold makes them the Attacker with a garrison of exactly one, and 815.1.c.2 then makes every other body of yours an invalid assignment until the Towering Combatant - a 3 that reads 5 on defence by 814.1.c - has lethal. 466.1.a.2 recalls the dragged body to their base if it survives, so price this as forced damage and a tempo tax rather than as removal.
• WHAT IT IS NOT. Nothing here scores; 469 defines Scoring as Conquer or Hold. And it moves ONE body of each - it sets up a fight, it does not win one.

Steps

1. Decide which designation you want before casting - the card gives you either.
2. TO ATTACK: move your unit and their unit to a battlefield NEITHER of you controls. Both applied Contested, and the card's own parenthetical makes YOU the attacker.
3. TO DEFEND ON YOUR OWN TURN: move their unit to a battlefield YOU control. 190.3.a.1 with 450 keys Contested on the MOVED unit's controller, so 464.2.c.1 makes them the Attacker and 464.2.c.2 makes you the Defender.
4. Move your own Towering Combatant in alongside if it is not already there - 449 allows it and 420.3.a means an exhausted body is fine.
5. 319.6 with 323.2.a give both arrivals their designations before 465.2 resolves; 815.1.c.2 then forces the whole assignment onto the [Tank].
6. Expect the dragged body to go home if it lives: 466.1.a.2 recalls Attackers when Defenders remain.

Per iteration

one combat created on the side of your choosing, for 2 Energy and 1 Power, moving one body of each

How it ends

engine only - three copies by 103.2.b, one fight each, and a dragged body that survives is recalled to their base (466.1.a.2); nothing here scores

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-orphan-remainder.md, part 1) 2026-09-07 record

Walked against Core Rules 2026-07-16

Match a deck list against the whole catalogue