All Will Be One, Zur, Eternal Schemer, and Corrupted Conscience

Prerequisites

• All Will Be One on the battlefield
• Zur, Eternal Schemer on the battlefield
• Corrupted Conscience in hand
• You have a way to put a counter on a permanent or player
• available

Steps

1. Activate Zur by paying , causing All Will Be One to become an enchantment creature until end of turn
2. Cast Corrupted Conscience by paying , attaching it to All Will Be One
3. Put a counter on a permanent or player
4. All Will Be One triggers, giving an opponent a poison counter and causing you to gain 1 life
5. Repeat step 4

Results

• Each opponent loses the game