Agrus Kos, Eternal Soldier + Soulbright Flamekin + Deflecting Swat + Felidar Guardian + Eternal 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 built around Agrus Kos, Eternal Soldier.

Cards required: 5
Cheapest stack total: $73.02
Color identity: RGW
Popularity: 0 decks
Format: Commander

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Agrus Kos copies activated abilities and triggers targeting him onto every other creature you control, which turns Soulbright Flamekin's activation into a mana engine producing eight red per pass. Felidar Guardian's ETB blinks Soulbright Flamekin and Eternal Witness; Eternal Witness recovers Deflecting Swat from the graveyard, which redirects a stray Felidar Guardian trigger back onto Agrus Kos to restart the loop — the whole chain is self-sustaining once all five pieces are in play.

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 Eternal Witness, blinking Soulbright Flamekin and Eternal Witness.
When Eternal 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

Deflecting Swat is the pivot piece that closes the loop; losing it to a discard effect before the Eternal Witness trigger resolves collapses the chain mid-execution. Any outlet that cares about ETB repetition — Impact Tremors, Purphoros, God of the Forge, or Altar of the Brood — converts the infinite blink loop into a table kill, since the infinite red mana alone doesn't close the game without a sink.