Agrus Kos, Eternal Soldier + Soulbright Flamekin + Deflecting Swat + Felidar Guardian + Izzet Chronarch

5-card combo · URW

Verdict

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

Cards required: 5
Cheapest stack total: $4.48
Color identity: URW
Popularity: 0 decks
Format: Commander

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Agrus Kos, Eternal Soldier is the glue: every activated ability or triggered ability targeting a creature gets copied onto every other creature you control for 1 plus a red or white mana. Soulbright Flamekin pumps out eight red mana per activation through those copies, Felidar Guardian blinks the pieces back into position, Izzet Chronarch recurs Deflecting Swat from the graveyard, and Deflecting Swat redirects excess Felidar Guardian triggers back to Agrus Kos to restart the loop. The moving parts are real — this is a 5-card combo requiring a commander on board and careful trigger ordering.

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 Izzet Chronarch, blinking Soulbright Flamekin and Izzet Chronarch.
When Izzet Chronarch 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 has no clean substitution for Agrus Kos since the copy-targeting clause is the engine's core; the support pieces are more flexible. Eternal Witness replaces Izzet Chronarch if the deck wants a cheaper recursion creature at the cost of blue identity. The loop produces infinite red mana but no built-in kill — Purphoros, God of the Forge or Impact Tremors converts the infinite ETBs into a lethal damage outlet.