Scroll Trickster
Pathfinder 2nd
An archetype that any class can take. You become very good at using scrolls you shouldn't be able to cast.
When you start the dedication you get the Trick Magic Item feat, letting you cast spells from magic items even if they are from a magic tradition you don't have and even if you are not a spellcaster, In addition, you get a +2 for using this feat with scrolls. Keep in mind you still need to have an investment in skill associated with the spell's tradition to cast.
Additional feats you can take is wiping out a scroll from your pocket and trick it as a single action or creating one temporary spell scroll for each spell level during your daily prep.