Skywrite

Level: 2

Casting Time: 1 action

Range: Sight

Duration: Concentration, up to 1 hour

You cause up to ten words to form in a part of the sky you can see. The words appear to be made of cloud and remain in place for the spell's duration. The words dissipate when the spell ends. A strong wind can disperse the clouds and end the spell early.

Source: XGE, page 165. Also found in EEPC, page 22.