Saheeli, Sublime Artificer, Underworld Breach, Grinding Station, and Pyretic Ritual

Prerequisites

• Saheeli, Sublime Artificer on the battlefield
• Underworld Breach on the battlefield
• Grinding Station on the battlefield
• Pyretic Ritual in the graveyard
• You control at least one additional artifact
• available

Steps

1. Activate Grinding Station by tapping it and sacrificing another artifact, causing you to mill three cards
2. Cast Pyretic Ritual from your graveyard for its escape cost by paying and exiling three other cards from your graveyard
3. Saheeli triggers, creating a 1/1 Servo artifact creature token
4. The Servo enters the battlefield, triggering Grinding Station, untapping Grinding Station
5. Resolve Pyretic Ritual, adding
6. Repeat

Results

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