Volo, Guide to Monsters, Errant, Street Artist, Chromatic Orrery, Corridor Monitor, and Twinning Staff

Prerequisites

• Volo, Guide to Monsters on the battlefield
• Errant, Street Artist on the battlefield
• Chromatic Orrery on the battlefield
• Corridor Monitor in hand
• Twinning Staff on the battlefield
• You do not control a Construct or have a Construct in your graveyard

Steps

1. Activate Chromatic Orrery's first ability by tapping it, adding
2. Cast Corridor Monitor by paying
3. Volo triggers, creating two copies of the Corridor Monitor spell
4. Activate Errant by paying and tapping it, creating two copies of a copied Corridor Monitor spell
5. Resolve a Corridor Monitor copy
6. The Corridor Monitor token enters the battlefield, untapping Chromatic Orrery
7. Activate Chromatic Orrery's first ability by tapping it, adding
8. Resolve a Corridor Monitor copy
9. The Corridor Monitor token enters the battlefield, untapping Errant
10. Repeat from step 4
11. Once you have infinite mana, you may instead activate Chromatic Orrery's second ability to draw infinite cards

Results

• Infinite card draw
• Infinite colored mana
• Infinite colorless mana
• Infinite creature tokens
• Infinite draw triggers
• Infinite ETB