Tawnos, Solemn Survivor, Sky Hussar, and Ashnod's Altar

Prerequisites

• Tawnos, Solemn Survivor on the battlefield
• Sky Hussar in the graveyard
• Ashnod's Altar on the battlefield
• available

Steps

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

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite self-mill
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce