Bootleggers' Stash, and Time Sieve

Prerequisites

• Bootleggers' Stash on the battlefield
• Time Sieve on the battlefield
• You control at least five lands

Steps

1. Activate five lands by tapping them, creating five Treasure tokens
2. Activate Time Sieve by tapping it and sacrificing the five Treasures, causing you to take an extra turn after this one
3. Repeat each turn

Results

• Infinite turns