How can you create a combo with Wilhelt, the Rotcleaver, Shambling Ghast, Chthonian Nightmare, Ashnod's Altar?
user
[START OF COMBO]This combo can be formed with Wilhelt, the Rotcleaver, Shambling Ghast, Chthonian Nightmare, Ashnod's Altar

Color identity: UB
Mana cost: 
Steps:
  1. Activate Ashnod's Altar by sacrificing Shambling Ghast, adding {C}{C}.
  2. When Shambling Ghast dies, it and Wilhelt's first ability trigger.
  3. Resolve the Shambling Ghast trigger, creating a Treasure token.
  4. Resolve the Wilhelt trigger, creating a 2/2 Zombie creature token with decayed.
  5. Activate the Treasure by tapping and sacrificing it, adding {B}.
  6. Cast Chthonian Nightmare by paying {1}{B}.
  7. When Chthonian Nightmare enters the battlefield, it triggers, causing you to get {E}{E}{E}.
  8. Activate Chthonian Nightmare by paying {E}, sacrificing the Zombie token, and returning Chthonian Nightmare from the battlefield to your hand, returning Shambling Ghast from your graveyard to the battlefield.
  9. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite colorless mana
  - Infinite storm count
  - Infinite energy counters[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Wilhelt, the Rotcleaver must be on the battlefield
  - Shambling Ghast must be on the battlefield
  - Chthonian Nightmare must be in your hand
  - Ashnod's Altar must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant