Atla Palani, Nest Tender + Triumph of Saint Katherine + Maskwood Nexus + Ashnod's Altar

Atla Palani, Nest Tender
Triumph of Saint Katherine
Maskwood Nexus
Ashnod's Altar

Requires
All permanents on the battlefield.
Steps
  1. Activate Ashnod's Altar by sacrificing Triumph of Saint Katherine, adding cc
  2. Triumph of Saint Katherine dies, triggering itself and Atla Palani
  3. Resolve the Triumph of Saint Katherine trigger, exiling it and the top six cards of your library into a face-down pile, then shuffling that pile and putting it on top of your library
  4. Resolve the Atla Palani trigger, revealing cards from the top of your library until you reveal a creature card and putting that card onto the battlefield
  5. Activate Ashnod's Altar by sacrificing that creature, adding cc
  6. Repeat from step 4 until Triumph of Saint Katherine is on the battlefield again
  7. Repeat from step 1
Results
Infinite colorless mana. Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Put all creatures in your library onto the battlefield, then into your graveyard.