Sly Requisitioner, Salvaging Station, and Umbral Collar Zealot

Prerequisites

• Sly Requisitioner on the battlefield
• Salvaging Station on the battlefield
• Umbral Collar Zealot on the battlefield

Steps

1. Activate Salvaging Station by tapping it, returning the artifact from your graveyard to the battlefield
2. Activate Umbral Collar Zealot by sacrificing the artifact
3. Sly Requisitioner triggers, creating a 1/1 Servo artifact creature token
4. Resolve the Umbral Collar Zealot ability, surveiling 1
5. Activate Umbral Collar Zealot by sacrificing the Servo
6. When the Servo dies, Salvaging Station triggers, untapping Salvaging Station
7. Resolve the Umbral Collar Zealot ability, surveiling 1
8. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite colorless mana
• Near-infinite creature ETB
• Near-infinite creature LTB
• Near-infinite creature sacrifice triggers
• Near-infinite death triggers