Activate the mana-producing creature by tapping it, adding at least {U}.
Cast Retraction Helix by paying {U}, targeting the mana-producing creature.
Cast Sewer-veillance Cam by paying {U}.
When Sewer-veillance Cam enters, it triggers, untapping the creature targeted by Retraction Helix.
Activate the creature targeted by Retraction Helix by tapping it, returning Sewer-veillance Cam from the battlefield to your hand.
When Sewer-veillance Cam leaves the battlefield, it triggers, untapping the creature targeted by Retraction Helix.
Activate the mana-producing creature by tapping it, adding at least {U}.
Repeat from step 3.

Infinite artifact ETB

Infinite artifact LTB

Infinite storm count

Sewer-veillance Cam

Retraction Helix

Cast Retraction Helix by paying {U}, targeting any non-mana producing creature you control that does not have summoning sickness.
Activate all mana-producing creatures you control by tapping them, adding at least {1}.
Cast the creature from your hand by paying its mana cost.
When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
Activate the creature targeted by Retraction Helix by tapping it, returning the creature cast in step 3 to your hand from the battlefield.
Repeat from step 2.

Infinite creature ETB

Infinite creature LTB

Infinite mana creatures you control can produce

Infinite untap of creatures

Intruder Alarm

Cast Retraction Helix by paying {U}, targeting Traxos.
Cast any historic card from your hand by paying {0}.
Traxos triggers, untapping itself.
Activate Traxos by tapping it, returning the historic card from the battlefield to your hand.
Repeat from step 2.

Traxos, Scourge of Kroog

Cast Retraction Helix by paying {U}, targeting Zephyr Scribe.
Activate Zephyr Scribe by tapping it, returning the noncreature, nonland permanent from the battlefield to your hand.
Cast the noncreature, nonland permanent by paying {0}.
Zephyr Scribe triggers, untapping itself.
Repeat from step 2.

Zephyr Scribe

Cast Retraction Helix by paying {U}, giving Nettle Drone an activated ability until end of turn.
Activate Nettle Drone by tapping it, returning the nonland permanent to your hand from the battlefield.
Cast the free permanent by paying {0}.
Nettle Drone triggers, untapping itself.
Let the free permanent resolve and enter the battlefield.
Repeat from step 2.

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