Lord of the Forsaken, Underworld Breach, Priest of Gix, and Dross Harvester

Prerequisites

• Lord of the Forsaken on the battlefield
• Underworld Breach on the battlefield
• Priest of Gix in the graveyard
• Dross Harvester on the battlefield
• available

Steps

1. Cast Priest of Gix from your graveyard for its escape cost by paying and exiling three other cards from your graveyard
2. Priest of Gix enters the battlefield, adding
3. Activate Lord of the Forsaken's first ability by paying and sacrificing Priest of Gix
4. Priest of Gix dies, triggering Dross Harvester, causing you to gain two life
5. Resolve the Lord of the Forsaken ability, causing you to mill three cards
6. Activate Lord of the Forsaken's second ability by paying 1 life, adding that can only be spent to cast spells from your graveyard
7. Repeat

Results

• Infinite self-mill
• Near-infinite black mana
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite lifegain
• Near-infinite lifegain triggers
• Near-infinite LTB
• Near-infinite sacrifice triggers
• Near-infinite storm count