Activate Emergence Zone's second ability by paying ({1} magic symbol) , tapping and sacrificing it, allowing you to cast spells this turn as though they had flash.
Cast Cauldron Familiar by paying ({B} magic symbol) .
When Cauldron Familiar enters the battlefield, it triggers.
Holding priority, cast Worldfire by paying ({6} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) , exiling all permanents, all cards in all hands and graveyards, and setting each player's life total to one.
Resolve the Voldran Epicure trigger from step 2, causing each opponent to lose 1 life and you to gain 1 life.
Each opponent loses the game due to having 0 or less life.