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

Prerequisites

• You control your commander.
• You have not activated Soulbright Flamekin's ability more than twice this turn.

Steps

1. 1Activate Soulbright Flamekin by paying , targeting Agrus Kos.
2. 2Agrus Kos triggers, causing you to pay to copy Soulbright Flamekin's ability targeting each other creature you control.
3. 3Resolve all Soulbright Flamekin triggers, giving the targeted creatures trample until end of turn and adding eight .
4. 4Cast Felidar Guardian by paying .
5. 5When Felidar Guardian enters the battlefield, it triggers, targeting Agrus Kos.
6. 6Agrus Kos triggers, causing you to pay to copy Felidar Guardian's trigger, targeting each other creature you control except Felidar Guardian.
7. 7Resolve the copies of Felidar Guardian's trigger targeting Soulbright Flamekin and Skullwinder, blinking Soulbright Flamekin and Skullwinder.
8. 8When Skullwinder enters the battlefield, it triggers, returning Deflecting Swat from your graveyard to your hand and causing an opponent to return a card to their hand from their graveyard.
9. 9Holding priority, activate Soulbright Flamekin by paying , targeting Agrus Kos.
10. 10Agrus Kos triggers, causing you to pay to copy Soulbright Flamekin's ability targeting each other creature you control.
11. 11Resolve all Soulbright Flamekin triggers, giving the targeted creatures trample until end of turn and adding eight .
12. 12Cast Deflecting Swat by paying , changing any of the remaining Felidar Guardian triggers not targeting Agrus Kos to target Agrus Kos instead.
13. 13Repeat from step 6.

Effects

• Infinite blinking
• Infinite creature ETB
• Infinite creature LTB
• Infinite magecraft triggers
• Infinite red mana
• Infinite storm count
• Target opponent returns all cards in their graveyard to their hand