Worldfire + Possibility Storm + Scroll Rack + Guttersnipe

Worldfire

Possibility Storm

Scroll Rack

Guttersnipe

How it works

1. Activate Scroll Rack by paying 1 and tapping it, exiling Worldfire from your hand face down, then causing you to draw one card and put Worldfire on top of your library.
2. Cast any sorcery spell from your hand by paying its mana cost.
3. Possibility Storm and Guttersnipe trigger.
4. Resolve the Possibility Storm trigger, exiling the sorcery spell, then exiling Worldfire from the top of your library and casting it without paying its mana cost.
5. Guttersnipe triggers, dealing 2 damage to each opponent.
6. Resolve Worldfire, exiling all permanents, all cards in all hands and graveyards, and setting each player's life total to one.
7. Resolve the Guttersnipe trigger from step 3, dealing 2 damage to each opponent.
8. Each opponent loses the game due to having less than zero life.

This ingenious sequence centers around manipulating the top of your library with Scroll Rack so that casting any ordinary sorcery spell triggers Possibility Storm to instantly cheat out Worldfire from your deck without paying its mana cost. Because Worldfire's resolution resets everyone's life total to 1 while obliterating all permanents, hands, and graveyards, any lingering stack triggers like Guttersnipe's damage become lethal the very moment they resolve. The beauty of the loop lies in how Guttersnipe pre-ordains the win—its deferred damage trigger sits safely on the stack through the global apocalypse, ensuring that your opponents' newly reduced life totals are immediately wiped out before they can ever draw a card or play a land.