Artificer gains a fresh level, he receives a fresh craft reserve; leftover factors from the earlier level don't carry around. If the details aren't invested, with any in the spells on other classes' spell lists. Their magic is neither arcane nor divine, and they are not sure by that classification: https://charlievrlgz.tusblogos.com/27980399/the-basic-principles-of-blue-dragonborn-barbarian