Iridescent Drake, Shade's Form, and Ashnod's Altar

Prerequisites

• Iridescent Drake on the battlefield
• Shade's Form on the battlefield
• Ashnod's Altar on the battlefield
• Shade's Form attached to Iridescent Drake

Steps

1. Activate Ashnod's Altar by sacrificing Iridescent Drake, adding
2. When Iridescent Drake dies, Shade's Form triggers, returning Iridescent Drake from your graveyard to the battlefield
3. When Iridescent Drake enters the battlefield, it triggers, returning Shade's Form from your graveyard to the battlefield attached to Iridescent Drake
4. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers