Archon of Falling Stars, Dance of the Dead, and Phyrexian Altar

Prerequisites

• Archon of Falling Stars on the battlefield
• Dance of the Dead in the graveyard
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Archon of Falling Stars, adding one mana of any color
2. When Archon of Falling Stars dies, it triggers, returning Dance of the Dead from your graveyard to the battlefield
3. When Dance of the Dead enters the battlefield, it triggers, returning Archon of Falling Stars from your graveyard to the battlefield, and attaching Dance of the Dead to it
4. Repeat

Results

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