Titania, Nature's Force, Underworld Breach, Phyrexian Altar, and Scorch Spitter

Prerequisites

• Titania, Nature's Force on the battlefield
• Underworld Breach on the battlefield
• Phyrexian Altar on the battlefield
• Scorch Spitter on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Scorch Spitter, adding
2. Scorch Spitter dies, triggering Titania's second ability, causing you to mill three cards
3. Cast Scorch Spitter from your graveyard for its escape cost by paying and exiling three other cards from your graveyard
4. Repeat

Results

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