Cast Quantum Misalignment by paying its mana cost, targeting a creature you control.
Holding priority, cast Naru Meha either from your hand or from the command zone by paying 2 plus commander tax, if applicable.
When Naru Meha enters the battlefield, it triggers, copying Quantum Misalignment, targeting Naru Meha.
Resolve the copy of Quantum Misalignment, creating a token copy of Naru Meha that isn't legendary.
Repeat from step 3.
This brilliant loop starts by casting Quantum Misalignment to target any creature, setting the stage before you flash in Naru Meha, Master Wizard. As Naru Meha enters the battlefield, her triggered ability steps in to copy the original Quantum Misalignment spell, targeting Naru Meha herself. Resolving that copy creates a non-legendary token copy of Naru Meha, which immediately triggers *again* to copy Quantum Misalignment anew. By chaining these copies together indefinitely, you generate an unbounded number of creature tokens and entering-the-battlefield triggers.