Prodigy
If you get a spell what if it doesn't appear on your powers?
Plummel would not come up for me.
Plummel would not come up for me.
I'm sorry, I do not understand your question as written. Please rephrase and use details. Also, provide a chapter number if possible.
Look in your spell book and switch it with a spell in use
Maybe it is a glitch. Close the game and rejoin it. Maybe it'll work. If not after at least 5 tries, it should be a bug. (but I highly doubt it is a glitch.)