Anafenza, Kin-Tree Spirit + Murderous Redcap + Altar of Dementia

Anafenza, Kin-Tree Spirit
Murderous Redcap
Altar of Dementia

Requires
All permanents on the battlefield. Murderous Redcap does not have any -1/-1 counters.
Steps
  1. Activate Altar of Dementia by sacrificing Murderous Redcap
  2. Murderous Redcap's persist ability triggers, returning itself to the battlefield
  3. Anafenza and Murderous Redcap trigger
  4. Resolve the Anafenza trigger, putting a +1/+1 counter on Murderous Redcap
  5. Resolve the Murderous Redcap trigger, dealing damage equal to its power to any target
  6. Resolve the Altar of Dementia ability, causing target player to mill two cards
  7. Repeat
Results
Infinite damage. Infinite ETB. Infinite LTB. Infinite sacrifice triggers. Infinite death triggers. Infinite mill. Infinite self-mill.