Displacer Kitten + Eternal Witness + Lotus Petal + Jeweled Lotus

Displacer Kitten

Eternal Witness

Lotus Petal

Jeweled Lotus

How it works

1. Activate Jeweled Lotus by tapping and sacrificing it, adding three mana of any color that can only be spent to cast your commander.
2. Cast Lotus Petal by paying 0.
3. Displacer Kitten triggers, blinking Eternal Witness.
4. When Eternal Witness enters the battlefield, it triggers, returning Jeweled Lotus from your graveyard to your hand.
5. Activate Lotus Petal by tapping and sacrificing it, adding one mana of any color.
6. Cast Jeweled Lotus by paying 0.
7. Displacer Kitten triggers, blinking Eternal Witness.
8. When Eternal Witness enters the battlefield, it triggers, returning Lotus Petal from your graveyard to your hand.
9. Repeat.