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

5-card combo · URW

Verdict

Yes — this 5-card loop generates infinite red mana, infinite ETBs, and infinite storm count in Jeskai once the engine is running.

Cards required: 5
Cheapest stack total: $71.57
Color identity: URW
Popularity: 0 decks
Format: Commander

Buy required cards on TCGplayer

Agrus Kos, Eternal Soldier is the glue: every activated ability or triggered ability gets copied across the board for , turning Soulbright Flamekin's pump into eight red mana per cycle and Felidar Guardian's blink trigger into a full board reset. Archaeomancer loops Deflecting Swat back to hand each iteration, which redirects leftover Felidar Guardian triggers back onto Agrus Kos to keep the chain self-sustaining. The setup is demanding — five specific pieces plus the commander and mana open — but the payoff is a hard infinite that kills on the spot with any storm or magecraft finisher.

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 Archaeomancer, blinking Soulbright Flamekin and Archaeomancer.
When Archaeomancer 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

Archaeomancer can be swapped for Mnemonic Wall or Izzet Chronarch if recursion redundancy is the concern; the blink effect from Felidar Guardian is the irreplaceable link, so Restoration Angel cannot substitute because it restricts blink targets. The combo produces infinite red mana but no draw, so a pre-installed Aetherflux Reservoir or Reckless Fireweaver is the recommended closer — without one already on board, all that mana goes nowhere.