Altar of Dementia + Blade of the Bloodchief Combos

2 known combos featuring both cards in Commander

Infinite +1/+1 counters on a creature Infinite death triggers Infinite ETB Infinite LTB Infinite mill

Combo 1 with Scurry Oak

Also requires: Scurry Oak Scurry Oak
Results: Infinite +1/+1 counters on a creature · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Steps
  1. Activate Altar of Dementia by sacrificing another creature.
  2. When the creature dies, Blade of the Bloodchief triggers, putting a +1/+1 counter on Scurry Oak.
  3. Scurry Oak triggers, creating a 1/1 Squirrel creature token.
  4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
  5. Repeat.

Combo 2 with Herd Baloth

Also requires: Herd Baloth Herd Baloth
Results: Infinite +1/+1 counters on a creature · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mill · Infinite sacrifice triggers · Infinite self-mill
Show steps
  1. Activate Altar of Dementia by sacrificing another creature.
  2. When the creature dies, Blade of the Bloodchief triggers, putting a +1/+1 counter on Herd Baloth.
  3. Herd Baloth triggers, creating a 4/4 Beast creature token.
  4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
  5. Repeat.
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