Thopter Foundry + Sword of the Meek + Krark-Clan Ironworks

Thopter Foundry
Sword of the Meek
Krark-Clan Ironworks

Requires
All permanents on the battlefield. 1 available.
Steps
  1. Activate Thopter Foundry by paying 1 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 Krark-Clan Ironworks by sacrificing the Thopter token, adding cc
  4. Repeat
Results
Infinite colorless mana. Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite lifegain. Infinite lifegain triggers.