Ashling, Flame Dancer, Worldfire, and Alchemist's Refuge

Prerequisites

• Ashling, Flame Dancer on the battlefield
• Worldfire in hand
• Alchemist's Refuge on the battlefield
• You have not triggered Ashling's ability this turn
• You have another instant or sorcery spell in hand
• Your deck size is at least 2
• plus enough mana to cast the additional instant or sorcery available

Steps

1. Activate Alchemist's Refuge by paying and tapping it, allowing you to cast spells this turn as though they have flash
2. Cast an instant or sorcery spell by paying its mana cost, triggering Ashling
3. Holding priority, cast Worldfire by paying
4. Ashling triggers, causing you to rummage
5. Resolve Worldfire, exiling all permanents, all cards in all hands and graveyards, and setting each player's life total to 1
6. Resolve the Ashling trigger from step 2, dealling 2 damage to each opponent
7. Each opponent loses the game as a state-based action due to having less than 0 life

Results

• Each opponent loses the game
• Exile all cards in all hands and graveyards
• Exile all permanents
• Near-infinite lifeloss for all players