How can you create a combo with Nim Deathmantle, Ashnod's Altar, Callous Bloodmage?
user
[START OF COMBO]This combo can be formed with Nim Deathmantle, Ashnod's Altar, Callous Bloodmage

Color identity: B
Mana cost: {2}
Steps:
  1. Activate Ashnod's Altar by sacrificing Callous Bloodmage, adding {C}{C}.
  2. Callous Bloodmage dies, triggering Nim Deathmantle, causing you to pay {4} to return Callous Bloodmage from your graveyard to the battlefield, and attach Nim Deathmantle to it.
  3. Callous Bloodmage enters the battlefield, creating a 1/1 Pest creature token.
  4. Activate Ashnod's Altar by sacrificing the Pest, adding {C}{C}.
  5. When the Pest dies, it triggers, causing you to gain one life.
  6. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant