Kykar, Zephyr Awakener + Mnemonic Wall + Time Walk

Kykar, Zephyr Awakener

Mnemonic Wall

Time Walk

How it works

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