Divining Witch, and Thassa's Oracle

Prerequisites

• Divining Witch on the battlefield
• Thassa's Oracle in hand
• another card in hand
• available

Steps

1. Cast Oracle for
2. Tap and activate Divining Witch's ability for and discarding a card while your Oracle trigger is on the stack, naming a card not in your library
3. Resolve Witch ability, exiling your library
4. Resolve Oracle trigger, winning the game

Results

• Win the game