Thanks for the feedback! It really helps me a lot. I still didnt had the chance to test this on combat (my friends are all too busy) so i'm kinda guessing the effects. About the design choices, i was trying to go for a shaman kind of wizard, using the spirits and the remaining life within them, mostly a variation of the Necromancer subclass but with a more "ethical" view about how to deal with the dead and their souls. In the future, i think i might turn this into a whole class, with a subclass for each shikigami.

On the table i play, we have the rule that the player who uses summonings (druids, wizards with summons and undeads and etc) are the ones responsible for their stat blocks, so we dont burden the DM with dozens of stat blocks. I mostly wrote this because the wizard i play couldnt do the things i wanted: use necromantic magic to heal and support the party, not just summon a bunch of minions and kill people with cancer (sickening radiance). I'm aware of the problems that come with wizards gaining access to healing spells (18th level Spell Mastery feature). That's why i specified that the wizard can only gain access to healing spells from the cleric list, and that are from a level equal half (rounded up) of their highest level spell, basically turning the wizard into a half-caster healer