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

Color identity: B
Mana cost: 
Steps:
  1. If Cryptic Trilobite has any +1/+1 counters, activate Cryptic Trilobite's first activated ability until it has no +1/+1 counters, adding {C}{C} that can only be spent to activate abilities each time.
  2. Activate Phyrexian Altar by sacrificing Cryptic Trilobite, adding {1}.
  3. Cryptic Trilobite's undying ability from Mikaeus triggers, returning Cryptic Trilobite from your graveyard to the battlefield with a +1/+1 counter on it.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite colorless mana that can only be used for activated abilities
  - Infinite death triggers
  - Infinite enters the battlefield
  - 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