Tawnos, Solemn Survivor, Sparring Mummy, and Krark-Clan Ironworks

Prerequisites

• Tawnos, Solemn Survivor on the battlefield
• Sparring Mummy in the graveyard
• Krark-Clan Ironworks on the battlefield
• available

Steps

1. Activate Tawnos's second ability by paying , tapping it and sacrificing two artifact tokens, exiling Sparring Mummy from your graveyard and creating a token copy of it that is an artifact in addition to its other types
2. When the Sparring Mummy token enters, it triggers, untapping Tawnos
3. Activate Tawnos's first ability by paying and tapping it, creating a copy of the Sparring Mummy token and causing you to mill two cards
4. When the Sparring Mummy token enters, it triggers, untapping Tawnos
5. Activate Krark-Clan Ironworks by sacrificing a Sparring Mummy token, adding
6. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite self-mill