Ognis, the Dragon's Lash, and Time Sieve

Prerequisites

• Ognis, the Dragon's Lash on the battlefield
• Time Sieve on the battlefield
• You control at least five creatures with haste
• An opponent cannot block and kill creatures you control

Steps

1. Declare five creatures you control with haste as attackers
2. Ognis triggers five times, creating five tapped Treasure tokens
3. Activate Time Sieve by tapping it and sacrificing the Treasures, causing you to take an extra turn after this one
4. Repeat each turn

Results

• Infinite turns