Kykar, Zephyr Awakener + Eternal Witness + Walk the Aeons

Kykar, Zephyr Awakener

Eternal Witness

Walk the Aeons

How it works

1. Cast Walk the Aeons by paying its mana cost.
2. Kykar triggers, exiling Eternal Witness.
3. Resolve Walk the Aeons, 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 Walk the Aeons from your graveyard to your hand.
6. Repeat each turn.