I like this set of summoning spells using the new design principles. A single powerful minion instead of a menagerie, stat block in the spell instead of sending you to the MM, no worries about the summoned creatures turning on you if your concentration gets broken. These look actually usable.

The tattoos are a cool idea, but they give me vague worries of power creep. Nothing I can specifically point at yet, just a general "the attunements stack and they can't be easily removed" worry.