Xenagos, God of Revels + Seize the Day + Prossh, Skyraider of Kher Combo

Xenagos on the battlefield.

Prossh in the command zone.

Seize the Day in hand.

Prossh must be your commander.

You have no more than three opponents.

plus enough mana to pay for commander tax, if applicable available

Cast Prossh by paying and commander tax, if applicable.

Prossh triggers, creating at least six 0/1 Kobold of Kher Keep creature tokens.

Activate Prossh six times by sacrificing six Kobold of Kher Keep tokens, giving Prossh +6/+0 until end of turn.

At the beginning of your combat phase, Xenagos triggers, giving Prossh +X/+X and haste until end of turn, where X is Prossh's power.

Deal combat damage to an opponent using Prossh, causing an opponent to be dealt at least twenty-two commander damage.

The opponent loses the game due to being dealt twenty-one or more combat damage by your commander.

Move to your postcombat main phase.

If Seize the Day is in your hand, cast it by paying .

Otherwise, cast it from your graveyard for its flashback cost by paying .

Resolve Sieze the Day, untapping Prossh and causing you to get an additional combat phase and main phase after this one.

Repeat from step 4 until each opponent has lost the game.

Each opponent loses the game

Significant combat damage