In a game I am about to play, there is a Bard who wants a pet owl. Can I as a warlock cast the find familiar spell on her behalf? I realize it is not a warlock spell, but if I take the Pact of the Tome I can also take the Book of Ancient Secrets eldritch invocation.
If I can cast it on behalf of someone else, can I still use it on myself to create a separate familiar? Or is that off the table as soon as I cast it?
Best Answer
There is no mechanic to "cast a spell on someone else's behalf". As the spellcaster, "you gain the service of a familiar", not someone else.
However, if your Bard can get their hands on a Ring of Spell Storing, you'd be able to help them out.
So you cast Find Familiar into the ring, and the Bard gets to cast it and have a familiar of their very own. There is nothing stopping you from also casting it yourself to get your own familiar.