How can you create a combo with Bishop of Wings, Xenograft, Altar of Dementia?
user
[START OF COMBO]This combo can be formed with Bishop of Wings, Xenograft, Altar of Dementia

Color identity: WU
Mana cost: 
Steps:
  1. Activate Altar of Dementia by sacrificing another creature.
  2. When the creature dies, Bishop of Wings' second ability triggers, creating a 1/1 Spirit creature token.
  3. When the Spirit token enters the battlefield, Bishop of Wings' first ability triggers, causing you to gain 4 life.
  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 enters the battlefield
  - Infinite death triggers
  - Infinite lifegain
  - Infinite lifegain triggers
  - 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
  - You control at least one additional creature.
  - "Angel" chosen with Xenograft.
[END OF COMBO PREREQUISITES]
assistant