This error doesn't seem to have anything to do with Discord, turns out it happens to me as well. Thanks for bringing that to my attention.
Thank you!
Yes, a few of them are more intended as something to build an adventure around rather than just something you find in random loot. Possess for example is a very fun spell for a villain to have!
Likewise, the Endure spell comes with an adventure location in its recharge condition, and it's more something for several factions to fight over than a spell to be used