Agrus Kos, Eternal Soldier + Soulbright Flamekin + Deflecting Swat + Felidar Guardian + Timeless Witness

5-card combo · RGW

Verdict

Yes — this 5-card loop generates infinite ETBs, infinite red mana, and infinite storm count in a Naya shell once all pieces are on the battlefield.

Cards required: 5
Cheapest stack total: $123.13
Color identity: RGW
Popularity: 0 decks
Format: Commander

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Agrus Kos, Eternal Soldier is the engine: every activated ability or triggered ability targeting him cascades into copies targeting your whole board, which is what lets a single Felidar Guardian blink multiple creatures per loop. Timeless Witness recurs Deflecting Swat each cycle, and Deflecting Swat redirects surplus Felidar Guardian triggers back to Agrus Kos to keep the chain self-sustaining. The prerequisite that Soulbright Flamekin's ability hasn't fired more than twice this turn means the loop must begin fresh — don't burn activations setting up.

Recipe

How it works

Prerequisites

You control your commander. You have not activated Soulbright Flamekin's ability more than twice this turn.

Steps

Activate Soulbright Flamekin by paying , targeting Agrus Kos.
Agrus Kos triggers, causing you to pay to copy Soulbright Flamekin's ability targeting each other creature you control.
Resolve all Soulbright Flamekin triggers, giving the targeted creatures trample until end of turn and adding eight .
Cast Felidar Guardian by paying .
When Felidar Guardian enters the battlefield, it triggers, targeting Agrus Kos.
Agrus Kos triggers, causing you to pay to copy Felidar Guardian's trigger, targeting each other creature you control except Felidar Guardian.
Resolve the copies of Felidar Guardian's trigger targeting Soulbright Flamekin and Timeless Witness, blinking Soulbright Flamekin and Timeless Witness.
When Timeless Witness enters the battlefield, it triggers, returning Deflecting Swat from your graveyard to your hand.
Holding priority, activate Soulbright Flamekin by paying , targeting Agrus Kos.
Agrus Kos triggers, causing you to pay to copy Soulbright Flamekin's ability targeting each other creature you control.
Resolve all Soulbright Flamekin triggers, giving the targeted creatures trample until end of turn and adding eight .
Cast Deflecting Swat by paying , changing any of the remaining Felidar Guardian triggers not targeting Agrus Kos to target Agrus Kos instead.
Repeat from step 6.

Result

Infinite LTB; Infinite ETB; Infinite storm count; Infinite red mana; Infinite magecraft triggers; Infinite blinking

Variations

Cheaper, tighter, alternate lines

The combo is five cards deep and leans hard on Agrus Kos being in the command zone — no casual substitute exists for his role here. Infinite red mana needs a sink to win; Walking Ballista or a Purphoros, God of the Forge already on board converts the infinite ETBs into a table kill.