Doomsday Excruciator, and Thassa's Oracle

Prerequisites

• Doomsday Excruciator in hand
• Thassa's Oracle in hand
• Your devotion to blue is at least 4
• and six available

Steps

1. Cast Doomsday Excruciator by paying six
2. When Doomsday Excruciator enters the battlefield, it triggers, causing each player to exile all but the bottom six cards of their library
3. Cast Thassa's Oracle by paying
4. When Thassa's Oracle enters the battlefield, it triggers, causing you to win the game

Results

• Win the game