Altar of Dementia + Zul Ashur, Lich Lord Combos

2 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite sacrifice triggers Infinite death triggers Infinite mill

Combo 1 with Shambling Ghast + Thornbite Staff

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count
Steps
  1. Activate Zul Ashur by tapping it, targeting Shambling Ghast.
  2. Cast Shambling Ghast from your graveyard by paying {B}.
  3. Activate Altar of Dementia by sacrificing Shambling Ghast.
  4. When Shambing Ghast dies, it and Zul Ashur trigger.
  5. Resolve the Shambling Ghast trigger, creating a Treasure token.
  6. Resolve the Zul Ashur trigger, untapping it.
  7. Resolve the Altar of Dementia ability.
  8. Activate the Treasure token by tapping and sacrificing it, adding {B}.
  9. Repeat.

Combo 2 with Intruder Alarm

Also requires: Intruder Alarm Intruder Alarm
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Infinite storm count · Infinite untap of creatures · Infinite mana creatures you control can produce · Infinite untap of creatures you control
Show steps
  1. Activate Zul Ashur by tapping it, targeting a Zombie card in your graveyard.
  2. Activate any number of creatures you control by tapping them, adding enough mana to cast the Zombie.
  3. Cast the Zombie from your graveyard by paying its mana cost.
  4. When the Zombie enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  5. Activate Altar of Dementia by sacrificing the Zombie, causing target player to mill cards equal to the sacrificed creature's power.
  6. Repeat.
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