Sun Titan, Angelic Renewal, and Ashnod's Altar

Prerequisites

• Sun Titan on the battlefield
• Angelic Renewal on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Sun Titan
2. When Sun Titan dies, Angelic Renewal triggers, causing you to sacrifice Angelic Renewal and return Sun Titan from your graveyard to the battlefield
3. When Sun Titan enters, it triggers, returning Angelic Renewal from your graveyard to the battlefield
4. Repeat

Results

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