Agrus Kos, Eternal Soldier + Soulbright Flamekin + Deflecting Swat + Felidar Guardian + Scholar of the Ages

5-card combo · URW

Verdict

Yes — this 5-card loop generates infinite red mana, infinite ETB/LTB triggers, and recovers every instant and sorcery from the graveyard, all pivoting on Agrus Kos copying activated abilities and triggered abilities for apiece.

Cards required: 5
Cheapest stack total: $72.08
Color identity: URW
Popularity: 0 decks
Format: Commander

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The engine runs on Agrus Kos, Eternal Soldier doubling Soulbright Flamekin's pump activation into eight red mana per cycle, while Scholar of the Ages rebounds Deflecting Swat each loop to redirect surplus Felidar Guardian blink triggers back onto Agrus Kos and keep the chain going. Felidar Guardian is the reset button that blinks Soulbright Flamekin and Scholar of the Ages back into play, refreshing the activation limit and the ETB draw. This lives in Agrus Kos commander shells that already want Felidar Guardian as a utility blink piece — the other four slots are the overhead.

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 Scholar of the Ages, blinking Soulbright Flamekin and Scholar of the Ages.
When Scholar of the Ages enters the battlefield, it triggers, returning Deflecting Swat and up to one other instant or sorcery 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; Return all instant and sorcery cards from your graveyard to your hand

Variations

Cheaper, tighter, alternate lines

The combo has no clean 4-card compression — Scholar of the Ages is load-bearing for Deflecting Swat recovery, and Deflecting Swat is load-bearing for redirecting the extra Felidar Guardian trigger. The infinite red mana closes with Walking Ballista or Crackle with Power already in hand; Scholar's ETB puts any instant or sorcery finisher back from the graveyard, so stock the bin first.