How can you create a combo with Demon of Dark Schemes, Hornet Queen, Phyrexian Altar?
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[START OF COMBO]This combo can be formed with Demon of Dark Schemes, Hornet Queen, Phyrexian Altar

Color identity: BG
Mana cost: {4}{G}{G}{G}
Steps:
  1. Cast Hornet Queen by paying {4}{G}{G}{G}.
  2. When Hornet Queen enters the battlefield, it triggers, creating four 1/1 Insect creature tokens.
  3. Activate Phyrexian Altar four times by sacrificing Hornet Queen and three Insect tokens, adding {3}{B}.
  4. When Hornet Queen and the Insect tokens die, Demon of Dark Schemes' second ability triggers four times, causing you to get {E}{E}{E}{E}.
  5. Activate Demon of Dark Schemes by paying {2}{B} and {E}{E}{E}{E}, putting Hornet Queen from your graveyard onto the battlefield.
  6. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite energy counters
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Demon of Dark Schemes must be on the battlefield
  - Hornet Queen must be in your hand
  - Phyrexian Altar must be on the battlefield
[END OF COMBO PREREQUISITES]
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