Hoard Hauler, and Time Sieve

Prerequisites

• Hoard Hauler on the battlefield
• Time Sieve on the battlefield
• Hoard Hauler does not have summoning sickness
• An opponent cannot block Hoard Hauler and controls at least five artifacts
• You control a creature with power three or greater

Steps

1. Activate Hoard Hauler by tapping a creature with power three or greater, causing it to become an artifact creature until end of turn
2. Deal combat damage to an opponent who controls five or more artifacts using Hoard Hauler
3. Hoard Hauler triggers, creating at least five Treasure artifact tokens
4. Activate Time Sieve by tapping it and sacrificing five Treasures, causing you to take an extra turn after this one
5. Repeat each turn

Results

• Infinite turns