Ant-Man, Elusive Avenger, and Time Sieve

Prerequisites

• Ant-Man, Elusive Avenger on the battlefield
• Time Sieve on the battlefield

Steps

1. Deal combat damage using Ant-Man, triggering its ability, creating at least five Treasure tokens
2. Activate Time Sieve by tapping it and sacrificing five Treasures, causing you to take an extra turn after this one
3. Repeat each turn

Results

• Infinite turns
• Lock