Talk:Know Alignment (wizard)/@comment-103.252.203.92-20191222152135/@comment-3045005-20191223010544

Verisimilitude with the pencil-and-paper game, spells included simply because they can, which tend to have better use when playing with a DM who might try to trick you by having a nice conversation with a secretly-evil NPC.

Actually a practical use is it tells you whether or not casting Protection From Evil, 10' Radius will be worthwhile or not.