How can you create a combo with Mikaeus, the Unhallowed, Cryptic Trilobite, Heartless Summoning?
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[START OF COMBO]This combo can be formed with Mikaeus, the Unhallowed, Cryptic Trilobite, Heartless Summoning

Color identity: B
Mana cost: 
Steps:
  1. Activate Cryptic Trilobite by removing a +1/+1 counter from it, adding {C}{C} that can only be spent to activate abilities.
  2. Repeat step 1 until Cryptic Trilobite does not have any +1/+1 counters on it.
  3. Cryptic Trilobite dies as a state-based action due to having 0 toughness.
  4. Cryptic Trilobite's undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana that can only be spent to activate abilities
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield[END OF COMBO RESULT][END OF COMBO]

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