Bogardan Phoenix, Solemnity, and Phyrexian Altar

Prerequisites

• Bogardan Phoenix on the battlefield
• Solemnity on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Sacrifice Bogardan Phoenix to Phyrexian Altar for one mana of any color
2. Bogardan Phoenix returns from your graveyard to the battlefield
3. Repeat

Results

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