Cast Fractured Identity by paying ({3} magic symbol) ({W} magic symbol) ({U} magic symbol) , exiling Nine Lives and causing each opponent to create a token copy of it.
Nine Lives triggers. Holding priority, kill Nevinyrral at instant speed.
When Nevinyrral dies, it triggers, destroying all creatures, artifacts and/or enchantments.
Each opponent's Nine Lives leaves the battlefield, causing them to lose the game.