Altar of Dementia + Sakashima the Impostor Combos

3 known combos featuring both cards in Commander

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

Combo 1 with Sun Titan + Loyal Retainers

Results: Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers
Steps
  1. Cast Sun Titan.
  2. When Sun Titan enters the battlefield you may, return Loyal Retainers to the battlefield.
  3. Activate Loyal Retainers, targeting Sakashima the Impostor.
  4. Have Sakashima the Impostor enter as a copy of Sun Titan.
  5. With Sakashima's enter the battlefield ability, return Loyal Retainers to the battlefield.
  6. Sacrifice Sakashima to Altar of Dementia.
  7. Activate Loyal Retainers, targeting Sakashima the Impostor.
  8. Repeat.

Combo 2 with Loyal Retainers + Karmic Guide

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill
Show steps
  1. Activate Loyal Retainers by sacrificing it, returning Sakashima the Impostor from your graveyard to the battlefield as a copy of Karmic Guide.
  2. When Sakashima the Impostor enters the battlefield, it triggers, returning Loyal Retainers from your graveyard to the battlefield.
  3. Activate Altar of Dementia by sacrificing Sakashima the Impostor.
  4. Repeat.

Combo 3 with Havi, the All-Father

Also requires: Havi, the All-Father Havi, the All-Father
Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite mill · Infinite self-mill · Return some creature cards from your graveyard to the battlefield
Show steps
  1. Activate Altar of Dementia by sacrificing Sakashima the Impostor.
  2. When Sakashima the Impostor dies, it and Havi trigger.
  3. Resolve the Havi trigger, returning Sakashima the Impostor from your graveyard to the battlefield as a copy of Havi.
  4. Resolve the Sakashima the Impostor trigger, returning any legendary creature card with mana value 5 or less from your graveyard to the battlefield.
  5. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Sakashima the Impostor's power.
  6. Repeat.
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