Borrowed Knowledge

2nd-level divination
Casting time: 1 action
Range: Self
Target: Self
Components: V, S, M (a book worth at least 25 gp)
Duration: 1 hour
Classes: Bard, Cleric, Warlock, Wizard
Subclasses: Fighter (Eldritch Knight), Rogue (Arcane Trickster), Sorcerer (Aberrant Mind), Sorcerer (Divine Soul), Wizard (Theurgy)

You draw on knowledge from spirits of the past. Choose one skill in which you lack proficiency. For the spell's duration, you have proficiency in the chosen skill. The spell ends early if you cast it again.