Altar of Dementia + Ambush Commander + Yedora, Grave Gardener

G identity

Commander legal

The 3 combo pieces

What must be in place

You control at least one additional nontoken Forest.

How to execute it

  1. Activate Altar of Dementia by sacrificing a nontoken Forest, which is a creature due to Ambush Commander.
  2. When the Forest dies, Yedora triggers, returning the Forest from your graveyard to the battlefield face down as a Forest land.
  3. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power.
  4. Repeat.

What the combo produces