Derevi, Empyrial Tactician, Faeburrow Elder, Delney, Streetwise Lookout, and Spawning Pit

Prerequisites

• Derevi, Empyrial Tactician on the battlefield
• Faeburrow Elder on the battlefield
• Delney, Streetwise Lookout on the battlefield
• Spawning Pit on the battlefield
• if you don't control a black or red permanent available

Steps

1. Activate Faeburrow Elder by tapping it, adding at least
2. Activate Spawning Pit by sacrificing Derevi
3. Choose to return Derevi from your graveyard to the command zone
4. Resolve the Spawning Pit ability Activate Derevi by paying , putting it from the command zone onto the battlefield
5. When Derevi enters the battlefield, it triggers twice
6. Resolve the first trigger, untapping Faeburrow Elder
7. Activate Faeburrow Elder by tapping it, adding at least
8. Resolve the second Derevi trigger, untapping Faeburrow Elder
9. Repeat

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite artifact tokens
• Infinite charge counters on a permanent
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite creature tokens
• Infinite death triggers
• Infinite mana permanents you control can produce