Thor, God of Thunder, Mistmeadow Witch, and Walk the Aeons

Prerequisites

• Thor, God of Thunder on the battlefield
• Mistmeadow Witch on the battlefield
• Walk the Aeons in hand
• each turn available

Steps

1. Cast Walk the Aeons by paying its mana cost
2. Thor's second ability triggers, dealing damage to any target
3. Resolve Walk the Aeons, causing you to take an extra turn after this one
4. Blink Thor using Mistmeadow Witch
5. When Thor enters, it triggers, allowing you to cast Walk the Aeons from your graveyard until the end of your next turn
6. Move to your next turn
7. Cast Walk the Aeons from your graveyard by paying its mana cost
8. Repeat from step 2

Results

• Infinite turns
• Lock