Agrus Kos, Eternal Soldier + Soulbright Flamekin + Deflecting Swat + Felidar Guardian + Shipwreck Dowser

5-card combo · URW

Verdict

Yes — this 5-card loop generates infinite ETBs, infinite red mana, and infinite storm count in any Agrus Kos blink shell that can assemble the pieces.

Cards required: 5
Cheapest stack total: $80.25
Color identity: URW
Popularity: 0 decks
Format: Commander

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Agrus Kos, Eternal Soldier is the engine: every activated or triggered ability on a creature you control becomes a trigger that Agrus copies for 1 and a red or white. Soulbright Flamekin's 2-mana activation feeds eight red each loop, Shipwreck Dowser recurs Deflecting Swat on every blink, and Deflecting Swat redirects Felidar Guardian's trigger back to Agrus Kos to restart the chain for free. The table sees a Felidar Guardian cast followed by an immediate decision to redirect a trigger — the window to disrupt is narrow and specifically requires stacking interaction against Agrus's copy trigger.

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 Shipwreck Dowser, blinking Soulbright Flamekin and Shipwreck Dowser.
When Shipwreck Dowser 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

Felidar Guardian is the only blink piece here with a direct substitute — Charming Prince covers the same ETB-blink role and costs one less, though it can only blink once per game. The combo requires a storm or ping outlet to actually close — Aetherflux Reservoir converts the infinite storm count into lethal, and Impact Tremors converts the infinite ETBs; without one of those already on board, the loop generates mana but no kill.