Malcolm, Keen-Eyed Navigator, Lightning-Rig Crew, Dargo, the Shipwrecker, and Umbral Collar Zealot

Prerequisites

• Malcolm, Keen-Eyed Navigator on the battlefield
• Lightning-Rig Crew on the battlefield
• Dargo, the Shipwrecker in the command zone
• Umbral Collar Zealot on the battlefield

Steps

1. Activate Lightning-Rig Crew by tapping it, dealing 1 damage to each opponent
2. Malcolm triggers, creating a Treasure for each opponent dealt damage
3. Activate a Treasure by tapping and sacrificing it, adding
4. Cast Dargo by paying due to its cost reduction, including its commander tax
5. Lightning-Rig Crew triggers, untapping it
6. Resolve Dargo
7. Then, activate Umbral Collar Zealot by sacrificing Dargo
8. Choose to return Dargo to the command zone from your graveyard
9. Resolve the Umbral Collar Zealot ability, causing you to surveil 1
10. Repeat

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite commander casts
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite storm count
• Infinite surveil
• Near-infinite Treasure tokens
• Near-infinite colored mana