Larian has again introduced a new mechanic that doesn’t exist in 5E: the spell in the Blast Pendant is unlocked with the Arcana proficiency.
That got me thinking, could we not use the same logic for scrolls? That way everyone is capable of using scrolls, they just need a skill. This seems more intuitive for casual players than knowing what spells belong to what classes.
You could take it a step further and make divine spells unlock with Religion (like you’re reading a prayer). Maybe Druid spells could use Nature.
You could even make the skill check to successfully cast a higher level spell based off this relevant skill.
Right now I’m not a big fan of barbarians being able to somehow read and understand a mirror image scroll etc. Potions are a better way to cover single-use items that anyone can use.
I didn't read the other comments so its probably already been said but previous editions of d&d had this, there was a skill check along with a DC to see if you could cast a spell from a scroll, artificer class had bonuses to this...don't quote me on the artificer part.
edit*
+1 to mrfuji3 comment
