This focus can be in the form of any class focus you wish and can be used to cast any spell you know, regardless of class. Though it will take a hand to use. This is a +1 focus.

The Magic Must Stand You have +3 on all concentration checks.

Font of Magic You know one extra cantrip while attuned to this focus, the cantrip must be from a class spell list that you have access to. You can change what cantrip this is at the end of a long rest.

Notes: A spellcaster