Altar of Dementia + Herd Baloth + Necrosynthesis

BG identity

Commander legal

The 3 combo pieces

What must be in place

Necrosynthesis attached to Herd Baloth.
You control another creature to sacrifice.

How to execute it

  1. Activate Altar of Dementia by sacrificing a creature, milling target player equal to its power.
  2. Necrosynthesis triggers, putting a +1/+1 counter on Herd Baloth.
  3. Herd Baloth triggers, creating a 4/4 Beast creature token.
  4. Activate Altar of Dementia by sacrificing the Beast token, milling target player four.
  5. Repeat from step 2.

What the combo produces