Cast Courageous Resolve by paying {2}{W}.
Cast Fractured Identity by paying {3}{W}{U}, exiling Nine Lives and causing each opponent to create a token copy of it.
Nine Lives leaves the battlefield, however you cannot lose the game due to Courageous Resolve.
Cast Cleansing Nova by paying its mana cost, destroying all enchantments.
When each opponent's Nine Lives leaves the battlefield, they each trigger, causing each opponent to lose the game.

Each opponent loses the game

Nine Lives

Fractured Identity

Cleansing Nova

Courageous Resolve

Cast Courageous Resolve by paying {2}{W}.
Activate Frenetic Efreet an arbitrarily large number of times by paying {0}.
Resolve a Frenetic Efreet ability, causing you to flip a coin.
Karplusan Minotaur triggers. If you won the flip, it deals 1 damage to any target you choose. If you lost the flip, it deals 1 damage to a target of an opponent's choosing. You cannot lose the game due to this damage due to Courageous Resolve, and Karplusan Minotaur cannot be destroyed due to its indestructibility or protection.
Repeat from step 3.

Infinite lifegain

Infinite lifegain triggers

Infinite damage

Frenetic Efreet

Karplusan Minotaur

Draw a card.
When you draw a card, Niv-Mizzet triggers, dealing 1 damage to you.
Vilis triggers, causing you to draw a card.
Repeat from step 2 until you have 5 life.
In response to the next trigger, cast Courageous Resolve by paying {2}{W}, giving a creature you control protection from your opponents until end of turn, drawing a card, and preventing yourself from losing the game this turn.
Repeat steps 2 and 3 until your library is empty.

Infinite card draw

Infinite draw triggers

Vilis, Broker of Blood

Niv-Mizzet, Parun

Combos with "Courageous Resolve"