MTG >Combos >Altar of Dementia +Promise of Tomorrow +Ranar the Ever-Watchful +

With all cards in play: Sacrifice a creature with Altar of Dementia to make your opponent mill cards. Promise of Tomorrow will exile the sacrificed creature, Ranar's ability will trigger, create a 1/1 token Sacrifice the 1/1 token with Altar of Dementia Repeat the process.