How can you create a combo with Athreos, Shroud-Veiled, Denry Klin, Editor in Chief, Altar of Dementia?
user
[START OF COMBO]This combo can be formed with Athreos, Shroud-Veiled, Denry Klin, Editor in Chief, Altar of Dementia

Color identity: WUB
Mana cost: 
Steps:
  1. Activate Altar of Dementia by sacrifiing another nontoken creature with a coin counter on it.
  2. When the creature dies, Athreos' third ability triggers, returning the creature from your graveyard to the battlefield.
  3. When the creature enters the battlefield, Denry Klin triggers, putting a coin counter on it.
  4. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to the sacrificed creature's power.
  5. 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
  - Denry Klin and another nontoken creature you control each have a coin counter on them.
[END OF COMBO PREREQUISITES]
assistant