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

5-card combo · WUBR

Verdict

Yes — this 5-card loop generates infinite ETBs, infinite red mana, and infinite storm count once the Felidar Guardian blink chain locks in.

Cards required: 5
Cheapest stack total: $122.92
Color identity: WUBR
Popularity: 0 decks
Format: Commander

Buy required cards on TCGplayer

Agrus Kos, Eternal Soldier is the engine: every activated ability and triggered ability gets copied across the board for 1 plus a red or white, which turns Soulbright Flamekin's 2-mana pump into eight red mana per cycle and Felidar Guardian's blink into a full board reset. Vampire Charmseeker recovers Deflecting Swat from the graveyard each loop, and Deflecting Swat retargets the leftover Felidar Guardian triggers back onto Agrus Kos to restart the chain. The table sees a five-piece setup in Boros-plus colors, which means every piece has to survive until the turn the pilot goes off.

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 Vampire Charmseeker, blinking Soulbright Flamekin and Vampire Charmseeker.
When Vampire Charmseeker 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 natural redundancy — each of the five cards fills a unique role, so cutting any piece kills the line entirely. Sink the infinite red mana into Grapeshot, Aetherflux Reservoir, or any X-spell that kills outright; without a dedicated outlet already on board or in hand, the loop generates value but not a win.