Luminous Broodmoth, Cruel Celebrant, Downdraft, and Phyrexian Altar

Prerequisites

• Luminous Broodmoth on the battlefield
• Cruel Celebrant on the battlefield
• Downdraft on the battlefield
• Phyrexian Altar on the battlefield
• available

Steps

1. Activate Downdraft by paying , causing Luminous Broodmoth to lose flying until end of turn
2. Activate Phyrexian Altar by sacrificing Luminous Broodmoth, adding
3. Cruel Celebrant triggers, causing each opponent to lose 1 life and causing you to gain 1 life
4. Luminous Broodmoth triggers, returning itself from your graveyard to the battlefield with a flying counter on it
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite LTB
• Infinite sacrifice triggers