Obeka, Splitter of Seconds, Time Sieve, and Court of Vantress

Prerequisites

• Obeka, Splitter of Seconds on the battlefield
• Time Sieve on the battlefield
• Court of Vantress on the battlefield
• Obeka has power 4 or greater and cannot be blocked by an opponent
• You are the monarch

Steps

1. At the beginning of your upkeep, Court of Vantress triggers, creating a token copy of Time Sieve
2. Deal combat damage using Obeka
3. Obeka triggers, causing you to get at least four upkeep steps after this phase
4. Repeat step 1 during each of the additional upkeep steps
5. Activate the nontoken Time Sieve by tapping it and sacrificing five Time Sieve tokens, causing you to take an extra turn after this one
6. Repeat each turn

Results

• Infinite turns