How can you create a combo with Zethi, Arcane Blademaster, Lithoform Engine, Aphetto Alchemist, Call to Glory?
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[START OF COMBO]This combo can be formed with Zethi, Arcane Blademaster, Lithoform Engine, Aphetto Alchemist, Call to Glory

Color identity: WU
Mana cost: 
Steps:
  1. Declare Zethi as an attacker, triggering its second ability.
  2. Holding priority, activate all mana producing creatures you control by tapping them, adding at least {4}{W}.
  3. Activate Lithoform Engine's first ability by paying {2} and tapping it, copying Zethi's triggered ability.
  4. Resolve the copy of Zethi's ability, creating a copy of each card exiled with a kick counter of it and causing you to pay {1}{W} to cast the copy of Call to Glory.
  5. Resolve the Call to Glory copy, untapping all creatures you control.
  6. Activate Aphetto Alchemist by tapping it, untapping Lithoform Engine.
  7. Repeat from step 2.
  8. Once you have infinite mana, you may use that mana to then cast the copies of all other cards exiled with kick counters on them.[END OF COMBO STEPS]

Result:
  - Infinite casts of all cards exiled with kick counters on them
  - Infinite magecraft triggers
  - Infinite mana creatures you control can produce
  - Infinite mana nonland permanents you control can produce
  - Infinite storm count
  - Infinite untap of creatures you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Zethi, Arcane Blademaster must be on the battlefield
  - Lithoform Engine must be on the battlefield
  - Aphetto Alchemist must be on the battlefield
  - Call to Glory must be exiled
  - Call to Glory is exiled with a kick counter on it.
  - Zethi and Aphetto Alchemist do not have summoning sickness.
  - Creatures you control can tap to produce at least {4}{W}.
[END OF COMBO PREREQUISITES]
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