Kykar, Zephyr Awakener + Eternal Witness + Temporal Manipulation

Kykar, Zephyr Awakener

Eternal Witness

Temporal Manipulation

How it works

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.