How can you create a combo with Serrated Biskelion, Thornbite Staff, Thran Vigil, Ashnod's Altar, Evernight Shade?
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[START OF COMBO]This combo can be formed with Serrated Biskelion, Thornbite Staff, Thran Vigil, Ashnod's Altar, Evernight Shade

Color identity: B
Mana cost: 
Steps:
  1. Activate Serrated Biskelion by tapping it, putting a -1/-1 counter on it and Evernight Shade.
  2. Activate Ashnod's Altar by sacrificing Evernight Shade, adding {C}{C}.
  3. When Evernight Shade dies, its undying ability and Serrated Biskelion trigger.
  4. Resolve the Serrated Biskelion trigger, untapping it.
  5. Resolve the Evernight Shade trigger, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  6. When Evernight Shade leaves your graveyard, Thran Vigil triggers, putting a +1/+1 counter on Serrated Biskelion.
  7. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - Serrated Biskelion does not have summoning sickness.
  - Thornbite Staff attached to Serrated Biskelion.
  - Evernight Shade does not have more than one +1/+1 counter on it.
[END OF COMBO PREREQUISITES]
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