How can you create a combo with Koll, the Forgemaster, Deathrender, Altar of Dementia?
user
[START OF COMBO]This combo can be formed with Koll, the Forgemaster, Deathrender, Altar of Dementia

Color identity: RW
Mana cost: 
Steps:
  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.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mill
  - Infinite sacrifice triggers
  - Infinite self-mill[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Deahrender attached to another nontoken creature you control.
[END OF COMBO PREREQUISITES]
assistant