Thanks Raze, and hat about scroll? is this technique with Crafting 2 still works? can I get them like that?
Magic Unlock is considered as Witchcraft spell.
You can't get a book for this spell but you can make unlock scroll from Blank Witchcraft Scroll. Crafting 2 is enough. Just make a save before you attempt to craft because there is only 10% chance or less for magic unlock scroll.
Sheet of Paper + Pixie Dust = Blank Witchcraft Scroll
Blank Witchcraft Scroll + Magic Ink Pot and Quill = Random Witchcraft Scroll (rare chance for Magic Unlock Scroll)
Take a look at this link for crafting guide in DOS EE
https://docs.google.com/document/d/1skVuINeNSoqDYqn7FzufVtXS3sxUK-cp1Zgb73uV6lI/edit#