Altar of Dementia + Deathrender + Koll, the Forgemaster

RW identity

Commander legal

The 3 combo pieces

What must be in place

Deahrender attached to another nontoken creature you control.

How to execute it

  1. Activate Altar of Dementia by sacrificing the creature with Deathrender attached.
  2. When the creature dies, Koll and Deathrender trigger.
  3. Resolve the Koll trigger, returning the creature from your graveyard to your hand.
  4. Resolve the Deathrender trigger, putting the creature from your hand onto the battlefield and attaching Deathrender to it.
  5. Resolve the Altar of Dementia ability from step 1, causing a player to mill cards equal to the creature's power.
  6. Repeat.

What the combo produces