Displacer Kitten + Aether Channeler + Mana Vault + Sol Ring

Displacer Kitten

Aether Channeler

Mana Vault

Sol Ring

How it works

1. Activate Sol Ring by tapping it, adding CC.
2. Cast Mana Vault by paying 1.
3. Displacer Kitten triggers, blinking Aether Channeler.
4. When Aether Channeler enters the battlefield, it triggers, returning Sol Ring from the battlefield to your hand.
5. Activate Mana Vault by tapping it, adding CCC.
6. Cast Sol Ring by paying 0.
7. Displacer Kitten triggers, blinking Aether Channeler.
8. When Aether Channeler enters the battlefield, it triggers, returning Mana Vault from the battlefield to your hand.
9. Repeat.