Thopter Foundry, Sword of the Meek, and Ashnod's Altar

Prerequisites

• Thopter Foundry on the battlefield
• Sword of the Meek on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

1. Activate Thopter Foundry by paying and sacrificing Sword of the Meek, creating a 1/1 Thopter artifact creature token and gaining 1 life
2. The Thopter token enters the battlefield, triggering Sword of the Meek, returning Sword of the Meek to the battlefield equipped to the Thopter
3. Activate Ashnod's Altar by sacrificing the Thopter token, adding
4. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite sacrifice triggers