Melira, Sylvok Outcast + Woodfall Primus + Altar of Dementia

Melira, Sylvok Outcast
Woodfall Primus
Altar of Dementia

Requires
All permanents on the battlefield. Woodfall Primus does not have a -1/-1 counters on it.
Steps
  1. Activate Altar of Dementia by sacrificing Woodfall Primus
  2. Woodfall Primus's persist ability triggers, returning it to the battlefield
  3. Woodfall Primus enters the battlefield, triggering its ability
  4. Holding priority, repeat an arbitrarily large number of times
  5. Resolve all Woodfall Primus abilities, destroying any number of noncreature permanents
  6. Repeat
  7. Resolve all Altar of Dementia's abilities, causing target player to mill cards equal to Woodfall Primus' power
  8. Repeat
Results
Destroy any number of noncreature permanents. Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite mill. Infinite self-mill.