Teshar, Ancestor's Apostle + Myr Retriever + Altar of Dementia + Mishra's Bauble

Teshar, Ancestor's Apostle
Myr Retriever
Altar of Dementia
Mishra's Bauble

Requires
All permanents on the battlefield.
Steps
  1. Activate Mishra's Bauble by tapping and sacrificing it, looking at the top card of a player's library and drawing a card at the beginning of the next turn's upkeep
  2. Activate Altar of Dementia by sacrificing Myr Retriever
  3. Myr Retriever triggers, returning Mishra's Bauble from your graveyard to your hand
  4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Myr Retriever's power
  5. Cast Mishra's Bauble by paying 0
  6. Teshar triggers, returning Myr Retriever from your graveyard to the battlefield
  7. Repeat
Results
Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite storm count. Infinite mill. Infinite self-mill. Infinite card draw at the beginning of the next upkeep step.