Sun Titan, Unholy Indenture, and Ashnod's Altar

Prerequisites

• Sun Titan on the battlefield
• Unholy Indenture on the battlefield
• Ashnod's Altar on the battlefield
• Unholy Indenture attached to Sun Titan

Steps

1. Sacrifice Sun Titan to Ashnod's Altar, generating
2. Unholy Indenture triggers, returning Sun Titan to the battlefield
3. Sun Titan triggers, returning Unholy Indenture to the battlefield

Results

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