Kykar, Zephyr Awakener, Eternal Witness, and Temporal Manipulation

Prerequisites

• Kykar, Zephyr Awakener on the battlefield
• Eternal Witness on the battlefield
• Temporal Manipulation in hand
• each turn available

Steps

1. Cast Temporal Manipulation by paying its mana cost
2. Kykar triggers, exiling Eternal Witness
3. Resolve Temporal Manipulation, causing you to take an extra turn after this one
4. At the beginning of your end step, Kykar triggers, returning Eternal Witness from exile to the battlefield
5. When Eternal Witness enters, it triggers, returning Temporal Manipulation from your graveyard to your hand
6. Repeat each turn

Results

• Infinite turns
• Lock