Here's 5 different ideas for things you can do with the Fog Cloud and Darkness spells in Baldur's Gate 3. They're pretty similar; same size, same duration and you can only have one of either of them. The difference is Darkness doesn't allow attacks in and out of it, while Fog Cloud does but blinds everyone in it.
The ideas: steal stuff in plain sight, move NPC's where you want them, pickpocket more easily, mess with the enemies AI and use it as an AOE debuff. Let me know if you find other uses for these spells. #baldursgate3