Vesperlark, Mirror Image, and Phyrexian Altar

Prerequisites

• Vesperlark on the battlefield
• Mirror Image on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Mirror Image, adding one mana of any color
2. When Mirror Image dies, it triggers, returning itself from your graveyard to the battlefield as a copy of Vesperlark
3. Repeat

Results

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