Agrus Kos, Eternal Soldier + Soulbright Flamekin + Deflecting Swat + 2 more

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.