Luminous Broodmoth, Dross Harvester, Downdraft, and Phyrexian Altar

Prerequisites

• Luminous Broodmoth on the battlefield
• Dross Harvester 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. Dross Harvester triggers, causing you to gain two 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 LTB
• Infinite sacrifice triggers