Skywrite

D&D 2014 spell: Skywrite. Source: Xanathar's Guide to Everything. level 2, school Transmutation, casting time 1 action, range Sight, duration Concentration,...

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: Xanathar's Guide to Everything, p. 165 - Licenses and attribution