Pattern of Rebirth, The Cauldron of Eternity, Iridescent Drake, and Phyrexian Altar

Prerequisites

• Pattern of Rebirth on the battlefield
• The Cauldron of Eternity on the battlefield
• Iridescent Drake on the battlefield
• Phyrexian Altar on the battlefield
• Pattern of Rebirth attached to Iridescent Drake

Steps

1. Activate Phyrexian Altar by sacrificing Iridescent Drake, adding one mana of any color
2. When Iridescent Drake dies, The Cauldron of Eternity and Pattern of Rebirth trigger
3. Resolve the Cauldron of Eternity trigger, putting Iridescent Drake on the bottom of your library from your graveyard
4. Resolve the Pattern of Rebirth trigger, putting Iridescent Drake from your library onto the battlefield
5. When Iridescent Drake enters the battlefield, it triggers, returning Pattern of Rebirth from your graveyard to the battlefield attached to Iridescent Drake
6. Repeat

Results

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