Cast Mikaeus with X=0.
Mikaeus dies due to having 0 toughness.
Luminous Broodmoth returns Mikaeus to the battlefield.
Repeat for step 2 for a mandatory loop that draws the game.

Draw the game

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Luminous Broodmoth

Mikaeus, the Lunarch

Solemnity

Activate Mikaeus' second ability by tapping it and removing a +1/+1 counter from it, putting two +1/+1 counters on each other creature you control.
Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding {U}{U}.
Activate Freed from the Real by paying {U}, untapping Mikaeus.
Activate Mikaeus' first ability by tapping it, putting two +1/+1 counters on it.
Activate Freed from the Real by paying {U}, untapping Mikaeus.
Repeat.
Activate Kami of Whispered Hopes by tapping it, adding at least {U}{U}.
Activate Freed from the Real's second ability by paying {U}, untapping Kami of Whispered Hopes.
Repeat.

Infinite colored mana

Infinite +1/+1 counters on creatures you control

Crystalline Crawler

Kami of Whispered Hopes

Freed from the Real

Cast Mikaeus either from your hand or from the command zone by paying {W} plus commander tax, if applicable.
Mikaeus enters the battlefield and dies as a state-based action due to having 0 toughness.
Metstatic Evangel and Magnanimous Magistrate trigger.
Resolve the Metastatic Evangel trigger, putting a reprieve counter on Magnanimous Magistrate.
Resolve the Magnanimous Magistrate trigger, removing a reprieve counter from it and returning Mikaeus from your graveyard to the battlefield.
Repeat

Infinite proliferate

Magnanimous Magistrate

Metastatic Evangel

Cast Mikaeus either from your hand or from the command zone by paying {W} plus commander tax, if applicable.
Mikaeus enters the battlefield and dies as a state-based action due to having 0 toughness.
Norn's Choirmaster and Magnanimous Magistrate trigger.
Resolve the Norn's Choirmaster trigger, putting a reprieve counter on Magnanimous Magistrate.
Resolve the Magnanimous Magistrate trigger, removing a reprieve counter from it and returning Mikaeus from your graveyard to the battlefield.
Repeat

Norn's Choirmaster

Activate Berta using Mikaeus's first activated ability by tapping them, putting a +1/+1 counter on Berta.
Berta's second ability triggers, adding one mana of any color.
Activate Berta using Farmstead Gleaner's ability by paying {2} and untapping them, putting a +1/+1 counter on Berta.
Berta's second ability triggers, adding one mana of any color.
Repeat any number of times.
Once you have infinite +1/+1 counters on Berta, you may repeat the loop using Mikaeus's last activated ability in step 1 instead, putting infinite +1/+1 counters onto creatures you control.

Combos with "Mikaeus, the Lunarch"