Moriden, I take issue with your Sponsored uber-caster. Here's why:
Fair concerns let me walk you through how it works under RAW.
Items of Power are often not allowed to grant Refinement.
"Abilities outside of the Minor Abilities, Strength, Toughness, and Speed categories must be examined closely by the GM and
may be disallowed." pg 167 your story. emphasis mine. the frequency of this being allowed or not is impossible to quantify.
Block or armour rituals are generally considered broken (and with good reason).
Most likely, though i was in no way addressing weather or not this build should be allowed in a game, merely showing that the artificer is in no way the most broken thing in the system
Lawbreaker only adds to control by the RAW.
What else could we possibly be talking about but the RAW? i have no way of knowing what any given person may like or dislike about the rules, so i must always assume that the book as written is the standard.
I don't think you can stack Lawbreaker (although I could be wrong).
"Trouble Comes in Threes. Increase the spellcasting bonus by one if you have three or more Lawbreaker abilities in any combination (i.e., if you’ve broken three or more Laws of Magic, sporting a Lawbreaker ability for each one), making the maximum possible bonus +3." pg 182 your story. so hes just taking the +3 from lawbreaker second, or the +2 from lawbreaker first. switch as desired for your particular character.
There's no such thing as a "biomancy" focus, it has to be "biomancy control" or something else like that.
and
You can't stack foci.
it is a thaumaturgical bonus to complexity for biomancy, which is one of the sample thaumaturgical fields in the book. see below for why i mistakenly listed it.
Allowing a thaumaturgy focus to boost all uses of Sponsored Magic is probably not reasonable.
Got me there, you need kemlerian necromancy to be able to do that and with necromancy not biomancy. im using autumn magic in my game which gives me the ability to use the complexity bonus of your biomancy as a control bonus for certain spells. So i apologize for forgetting that its not a part of printed summer magic. so instead we change the focus items to. a single one that has +4 summer magic control offensive, and +2 summer magic power: offensive. resulting in 9 shift offensive evocations with a control base of 12, mix and match as needed if you want better rotes for defense. im sure i could make a version using kemlerian that worked similarly but i don't see the need.
Not to mention that Wards are fixed location spells and not something that can be carried with you. Otherwise, every wizard in the novels would be utterly un-touchable.
Wards certainly are. Veils however which i believe use a similar or identical system however are not. And what we are talking about is using biomancy to enhance a body to withstand damage. So much like a ward being limited to a threshold or circle of power this is limited to a person. normally you'd have a really hard time doing this since your understanding of biology probably isn't sufficient, but thats not a problem with summer magic.
The reason you don't see any of the wizards in the book doing this is very simple, none of them have either summer magic or the willingness to experiment with biomancy, rightly fearing the consequences to themselves and from the law. I'm sure you'll then ask well why don't the summer court/knight do this?
To which i can easily respond how do we know they don't? the
"ogre" that harry fights in summer knight was essentially immune to anything he did to him that didn't involve cold iron, which i would argue would bypass any spell cast by summer magic.
There are in fact several occasions where harry
fights someone who he basically cant hurt with direct magic attacks.
To me that very much seems like a situation where harry is confronted with a "ward/block" that he cant overcome until he gets enough assessment actions to penetrate or bring it down.