Cast Baral's Expertise by paying {3}{U}{U}.
Holding priority, cast Lutri by paying its mana cost plus commander tax, if applicable.
When Lutri enters, it triggers, copying Baral's Expertise, targeting Lutri.
Resolve the copy of Baral's Expertise, returning Lutri from the battlefield to your hand, and casting Lutri from your hand without paying its mana cost.
Repeat from step 3.

Infinite ETB

Infinite LTB

Infinite magecraft triggers

Infinite storm count

Return any number of artifacts and/or creatures to their owners' hands

Baral's Expertise

Lutri, the Spellchaser

Cast Release to the Wind by paying {2}{U}
Holding priority, cast Lutri either from your hand or from the command zone by paying its mana cost plus commander tax if applicable.
When Lutri enters, it triggers, copying Release to the Wind, targeting Lutri.
Resolve the Release to the Wind copy, exiling Lutri
Cast Lutri from exile without paying its mana cost.
Repeat from step 3.

Release to the Wind

Cast Whirlwind Technique by paying its mana cost, targeting any applicable target(s).
Holding priority, cast Lutri by paying its mana cost reduced by Semblance Anvil.
When Lutri enters, it triggers, copying Whirlwind Technique targeting Lutri.
Resolve Whirlwind Technique, airbending Lutri.
Holding priority, cast Lutri from exile by paying {0} due to Semblance Anvil.
Repeat from step 3.

Infinite blinking

Infinite draw triggers for any number of players

Near-infinite card draw for any number of players

Near-infinite looting for any number of players

Near-infinite self-discard triggers for any number of players

Whirlwind Technique

Semblance Anvil

Cast Snap by paying its mana cost.
Holding priority, cast Lutri without paying its mana cost due to Aluren.
When Lutri enters, it triggers, copying Snap.
Resolve the Snap copy, returning Lutri from the battlefield to your hand.
Repeat from step 2.

Infinite mana lands you control can produce

Infinite untap of lands you control

Aluren

Snap

Cast Brass's Bounty by paying {6}{R}.
Holding priority, cast Lutri by paying {1}{U/R}{U/R}.
When Lutri enters, it triggers, copying Brass's Bounty.
Resolve the copy of Brass's Bounty, creating a Treasure token for each land you control.
Holding priority, activate Altar of Dementia by sacrificing Lutri.
Activate five Treasures by tapping and sacrificing them, adding {W}{U}{B}{R}{G}.
Activate Horde of Notions by paying {W}{U}{B}{R}{G}, causing you to cast Lutri from your graveyard without paying its mana cost.
Repeat from step 3.

Combos with "Lutri, the Spellchaser"