Agrus Kos, Eternal Soldier + Soulbright Flamekin + Deflecting Swat + Felidar Guardian + Donnie & April, Adorkable Duo

5-card combo · URW

Verdict

Yes — this 5-card loop generates infinite ETBs, infinite red mana, and infinite storm count in a Jeskai shell once all pieces are assembled.

Cards required: 5
Cheapest stack total: $98.25
Color identity: URW
Popularity: 0 decks
Format: Commander

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Agrus Kos, Eternal Soldier is the engine: every activated ability or triggered ability gets copied across the board for , turning Soulbright Flamekin's activation into eight per loop and Felidar Guardian's ETB into a mass blink. Donnie & April, Adorkable Duo reloads Deflecting Swat from the graveyard each blink cycle, and that free-cast Swat redirects spare Felidar Guardian triggers back onto Agrus Kos to restart the chain. The combo is functionally self-sustaining once the mana surplus from Soulbright Flamekin covers the copy costs.

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 Donnie & April, blinking Soulbright Flamekin and Donnie & April.
When Donnie & April 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 five-piece requirement makes this fragile — removing Agrus Kos at any point collapses the whole chain. Swap Felidar Guardian for Restoration Angel if the Felidar is answered, though Restoration Angel's human-only clause means Donnie & April must be in the blink window. Aetherflux Reservoir or Grapeshot closes the loop; the infinite storm count is the kill condition, not the mana or blink count alone.