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

5-card combo · RW

Verdict

Yes — this 5-card loop generates infinite red mana and infinite ETB triggers in a Boros shell that runs Agrus Kos, Eternal Soldier as commander.

Cards required: 5
Cheapest stack total: $108.20
Color identity: RW
Popularity: 0 decks
Format: Commander

Buy required cards on TCGplayer

Agrus Kos, Eternal Soldier is the engine: every activated ability or triggered ability targeting him propagates copies to every other creature you control, turning Soulbright Flamekin's 2-mana pump into eight red mana and Felidar Guardian's blink trigger into a mass flicker. Revolutionist is the glue, returning Deflecting Swat from the graveyard each time it enters so the Felidar Guardian triggers can be redirected to keep Agrus Kos in the copy chain. The table sees a Boros blink deck resolving Felidar Guardian and then watching mana pile 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 Revolutionist, blinking Soulbright Flamekin and Revolutionist.
When Revolutionist 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 loop requires all five pieces to function and the steps are precise — one missed redirect and the chain collapses, so include redundant graveyard recursion like Anarchist if Revolutionist is removed. Infinite red mana without a sink does nothing; pair this with Crackle with Power, Purphoros, God of the Forge, or Impact Tremors to convert the infinite ETBs into a kill.