1) Memory restoration magic is possible, but very difficult and not something available at this time for PCs to learn. It's also one of those magics that is very highly regulated, as it would be possible for the person casting the spell to implant false memories.

2) It is possible! Sokie can hear a rumor of a particular crystal that helps with leyline magic. If you would like to post on the Investigations page, we can get this ball rolling for you.

3) Absolutely!