Tawnos, Solemn Survivor, Corridor Monitor, Illusionist's Bracers, and Grim Monolith

Prerequisites

• Tawnos, Solemn Survivor on the battlefield
• Corridor Monitor in the graveyard
• Illusionist's Bracers on the battlefield
• Grim Monolith on the battlefield
• Illusionist's Bracers attached to Tawnos
• Tawnos does not have summoning sickness
• You control at least two artifact tokens
• available

Steps

1. Activate Grim Monolith's first ability by tapping it, adding
2. Activate Tawnos' second ability by paying , tapping it, sacrificing two artifact tokens and exiling Corridor Monitor from your graveyard
3. Illusionist's Bracers triggers, copying Tawnos' ability
4. Resolve the copy of Tawnos' ability, creating a token copy of Corridor Monitor
5. The Corridor Monitor token enters the battlefield, untapping Tawnos
6. Resolve the second Tawnos ability, creating a token copy of Corridor Monitor
7. The Corridor Monitor token enters the battlefield, untapping Grim Monolith
8. Activate Grim Monolith's first ability by tapping it, adding
9. Activate Tawnos' first ability by paying and tapping it
10. Illusionist's Bracers triggers, copying Tawnos' ability
11. Resolve the copy of Tawnos' ability, creating a token copy of Corridor Monitor and causing you to mill two cards
12. The Corridor Monitor token enters the battlefield, untapping Tawnos
13. Resolve the second Tawnos ability, creating a token copy of Corridor Monitor and causing you to mill two cards
14. The Corridor Monitor token enters the battlefield, untapping Grim Monolith
15. Repeat from step 8

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite ETB
• Infinite self-mill