The Prismatic Piper, Rakdos, Lord of Riots, Warstorm Surge, and Ashnod's Altar

Prerequisites

• The Prismatic Piper in the command zone
• Rakdos, Lord of Riots on the battlefield
• Warstorm Surge on the battlefield
• Ashnod's Altar on the battlefield
• You are able to cast The Prismatic Piper for due to Rakdos

Steps

1. Cast The Prismatic Piper from the command zone by paying
2. Warstorm Surges triggers, dealing 3 damage to any target opponent
3. Activate Ashnod's Altar by sacrificing The Prismatic Piper, adding
4. Choose to have The Prismatic Piper return to command zone
5. Repeat

Results

• Infinite colorless mana
• Infinite commander casts
• Infinite damage
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers