How can you create a combo with Bloodline Necromancer, Molten Echoes, Ashnod's Altar?
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[START OF COMBO]This combo can be formed with Bloodline Necromancer, Molten Echoes, Ashnod's Altar

Color identity: BR
Mana cost: {4}{B}
Steps:
  1. Cast Bloodline Necromancer by paying {4}{B}.
  2. Bloodline Necromancer enters the battlefield, triggering itself and Molten Echoes.
  3. Resolve the Bloodline Necromancer trigger, returning a Vampire or Wizard creature card from your graveyard to the battlefield.
  4. Activate Ashnod's Altar by sacrificing Bloodline Necromancer, adding {C}{C}.
  5. Resolve the Molten Echoes trigger, creating a token copy of Bloodline Necromancer with haste.
  6. The token Bloodline Necromancer enters the battlefield, returning the nontoken Bloodline Necromancer from your graveyard to the battlefield.
  7. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite creature tokens with haste
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Return all Vampires and Wizards from your graveyard to the battlefield[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Bloodline Necromancer must be in your hand
  - Molten Echoes must be on the battlefield
  - Ashnod's Altar must be on the battlefield
  - "Vampire" or "Wizard" chosen with Molten Echoes.
[END OF COMBO PREREQUISITES]
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