Sun Titan + Angelic Renewal + Altar of Dementia

Sun Titan
Angelic Renewal
Altar of Dementia

Requires
All permanents on the battlefield.
Steps
  1. Sacrifice Sun Titan to Altar of Dementia, milling the top 6 of target player's library
  2. Sacrifice Angelic Renewal to return Sun Titan to the battlefield
  3. Sun Titan triggers, returning Angelic Renewal to the battlefield
Results
Infinite mill. Infinite ETB. Infinite LTB. Infinite sacrifice triggers. Infinite death triggers.