Cast Retraction Helix by paying {U}, targeting Nettle Drone.
Cast the nonland permanent by paying {0}.
Nettle Drone triggers, untapping itself.
Activate Nettle Drone by tapping it, returning the nonland permanent to your hand from the battlefield.
Repeat.

Infinite LTB

Infinite ETB

Infinite storm count

Permanent castable for {0} that does not die on entering

Nettle Drone

Retraction Helix

Cast Banishing Knack by paying {U}, targeting Nettle Drone.
Cast the artifact by paying {0}.
Nettle Drone triggers, untapping itself.
Activate Nettle Drone by tapping it, returning the artifact to your hand from the battlefield.
Repeat.

Artifact with MV = 0

Banishing Knack

Cast Retraction Helix by paying {U}, targeting Nettle Drone.
Cast Memnite by paying {0}.
Nettle Drone triggers, untapping itself.
Activate Nettle Drone by tapping it, returning Memnite to your hand from the battlefield.
Repeat.

Memnite

Cast Banishing Knack by paying {U}, targeting Nettle Drone.
Cast Memnite by paying {0}.
Nettle Drone triggers, untapping itself.
Activate Nettle Drone by tapping it, returning Memnite to your hand from the battlefield.
Repeat.

Combos with "Nettle Drone"