If I play Lillia, Fae with no stun then move to battlefield that opponent has Vex, Apathetic. Lillia, Fae creates sprite token with stun by Vex then I play Smoke and Mirrors what result?

To determine the result, let's break down the interactions step-by-step.

1. Initial State

• Lillia, Fae Fawn moves to a battlefield where your opponent controls Vex, Apathetic.
• Lillia's Trigger: When Lillia moves, she creates a 3 [M] Sprite unit token with [Temporary] at the location she left (Rule 359.3.f.3).
• Vex's Trigger: Since the Sprite token is "played" by Lillia's ability, Vex, Apathetic triggers. The Sprite token is Stunned and cannot move for the rest of the turn (FAQs #9837, #8758).

2. Playing Smoke and Mirrors

You attempt to play Smoke and Mirrors. This spell requires you to choose two units you control at different locations and checks if at least one of them has [Temporary].

• Eligibility: The Sprite token (at the location Lillia left) and Lillia (at the location with Vex) are at different locations and are under your control.
• Condition: If you target Lillia and the Sprite token, the condition "If at least one of them has [Temporary]" is satisfied because the Sprite token has the [Temporary] keyword.

3. Resolution of Smoke and Mirrors

When Smoke and Mirrors resolves:

1. Movement: The spell attempts to move Lillia and the Sprite token to each other's locations.
2. Lillia's Trigger: Because Lillia moves, her ability triggers, playing a new 3 [M] Sprite token at the location she just left (the location where Vex is present).
3. Draw: You draw 1 card.

4. Key Considerations

• Vex's Restriction: Vex, Apathetic applied a "cannot move" restriction to the first Sprite token. Since game-wide movement effects (like those from spells) generally respect existing movement restrictions, the movement instruction for that specific Sprite token from Smoke and Mirrors will likely fail to execute, while Lillia may still move.
• The Second Sprite: The new Sprite token created by Lillia's second move will enter play at her previous location (the battlefield with Vex). Because Vex is present, this new Sprite will also be triggered, stunned, and restricted from moving.

Summary

If you target Lillia and the Sprite with Smoke and Mirrors:

1. The condition "at least one has [Temporary]" is met.
2. The spell attempts to move both units, but the original Sprite is likely restricted from moving by Vex and will remain in place, while Lillia moves to the Sprite's location.
3. Lillia’s move triggers a new Sprite token to be played at her previous location (the battlefield with Vex).

Note: I could not fully verify this ruling against the retrieved rules.