Vizier of Remedies + Lesser Masticore + Altar of Dementia

Vizier of Remedies
Lesser Masticore
Altar of Dementia

Requires
All permanents of the battlefield.
Steps
  1. Activate Altar of Dementia by sacrificing Lesser Manticore
  2. Lesser Manticore's persist ability triggers, returning it from your graveyard to the battlefield with zero -1/-1 counters due to Vizier of Remedies
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Lesser Manticore's power
  4. Repeat
Results
Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite mill. Infinite self-mill.