Worldgorger Dragon, and Worldfire

Prerequisites

• Worldgorger Dragon in hand
• Worldfire in hand
• available

Steps

1. Cast Worldgorger Dragon by paying
2. Worldgorger Dragon enters the battlefield, exiling all other permanents you control
3. Cast Worldfire by paying , exiling all permanents, all cards in all hands and graveyards, and setting each player's life total to one
4. Worldgorger Dragon leaves the battlefield, returning all cards exiled with it to the battlefield under your control

Results

• Exile all cards in all hands and graveyards
• Exile all permanents you don't control
• Near-infinite lifeloss for all players
• Set all life totals to one