How can you create a combo with Zethi, Arcane Blademaster, Lithoform Engine, Dramatic Reversal?
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[START OF COMBO]This combo can be formed with Zethi, Arcane Blademaster, Lithoform Engine, Dramatic Reversal

Color identity: WU
Mana cost: 
Steps:
  1. Declare Zethi as an attacker, triggering its second ability.
  2. Holding priority, activate all mana producing nonland permanents you control by tapping them, adding at least {4}{U}.
  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}{U} to cast the copy of Dramatic Reversal.
  5. Resolve the Dramatic Reversal copy, untapping all nonland permanents you control.
  6. Repeat from step 2.
  7. 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 colored mana
  - Infinite colorless mana
  - Infinite magecraft triggers
  - Infinite mana nonland permanents you control can produce
  - Infinite storm count
  - Infinite untap for nonland permanents
  - Infinite untap of nonland permanents 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
  - Dramatic Reversal must be exiled
  - Dramatic Reversal is exiled with a kick counter on it.
  - Zethi does not have summoning sickness.
  - Nonland permanents you control can tap to produce at least {4}{U}.
[END OF COMBO PREREQUISITES]
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