2. Silver transformers get adjusted for inflation. Specifically, power inflation. People say linear fighters, quadratic wizards, so let's actually use a quadratic progression for spell value! 1,4,9,16,25,36,49,64,81 ebbs to cast spells from a silverOut, and they get hit hard by inefficiency; silverIn still only produces the linear amount. This is mostly because I literally have no control over the power level of spells; while other features in the system see fairly balanced around each other, all of the biggest problems I've seen come from using silver transformers to create an out-of-whack spell or something for cheap.
I support this, because at some point the Gramarist becomes an overpowered Artificer through abusing the Silver Transformers ability to replicate spellcasting and theoretically removing time as a factor by the use of
Teleport Through Time, however I believe that 81 ebbs for a 9th level spell is to easy. 9th level spells should require A LOT OF POWER (probably into the hundreds) and Epic spells (which for all intensive purposes function as 10th level spells) shouldn't cost 10 ebbs. They should either cost thousands of Ebbs or shouldn't be accessible at all... Just my view on things. (No help, Just opinions and thoughts like always...)
1. Gramarists get invocations, up to 3/3/2/2 from a general utility engineering suite of them:
Wonderful. I always felt that Gramarist could use some sort of magical support beyond Eldritch Blast.
Least Invocation List: alarm, animate rope, arcane mark, endure elements, erase, hold portal, mage hand (5lb/caster level), open/close, silent image, and ventriloquism.
Hmm... I'd offer to either specify that Silent Image can only create structures, because Silent Image is single handedly one of the most powerful and easier to abuse 1st level spells in the game and making it at will and usable all day is just asking for trouble. It adds firepower to the class, but it adds to much firepower. If your aim was to make it replicate a lighter version of 101 IMCH you would be better off giving them Major Image. Adds a light heat signature, sound and smell which is pretty good, but this is even more power then Silent Image. I view the balanced spell level equivalent for Invocations as being 0-2 for Least, 3-4 for Lesser, 5-7 for Greater and 8-9 for Revolutionary, but eh...
In the case of Silent Image, I propose using Invisibility (objects only). Not TOO powerful and it requires a certain level of creativity that to me, has become a signature for Gramarie. In addition to that, what is your opinion on using Enlarge/Reduce person for massive/miniture productions? Just a thought really...
Lesser Invocation List: arcane sight, detect thoughts, fly (24 hour duration), gust of wind, illusory script and secret page (two for one!), magic mouth (automatically permanent if you choose), misdirection, phantom trap, shatter, and water breathing.
For lesser, Major Image wouldn't exactly be to overpowered as well would be moving Hallucinate Terrain over here. This one might be a stretch, but I seriously recommend adding in Dispel Magic and allowing it to deactive Gramaric Principles for 1 round/level.
No real clue why Phantom trap, shatter and illusory script is there. Neither am I sure why misdirection is there. I'd add Clairaudience/Clairvoyance and make it so that it only works around your Spectroconstructs so that you have a constant eye on your aids. Also, I'd recommend Servant Hoard (think Mass Unseen Servant). Not really abusable, but it gets the job done if longer term physical labor is needed and your Specptroconstructs are too specific to use outside of construction.
I have alot more to say here, but lets move on for now.
Greater Invocation List: arcane eye, dimensional anchor, dimension door, fabricate, hallucinatory terrain, passwall, secret chest, sending, stone shape, and telekinesis.
Dimension Door is fine, just lower the range of function (changing it to close instead of long). This is one of my personal favorite levels with what you did here. Dimensional Anchor is a little unnecessary since I can't exactly imagine a use for it... Secret chest is always nice, and telekinesis kind of makes the Prime Mover slightly moot doesn't it?
Adding Animate Dead (Zombie's only) works as well, but fluff it so that it allows you adjust the skin of the creature to replicate BIOY 101. Prismatic Wall (1 layer at a time) would be just awesome really.
Adding Greater Dispel Magic for the sake of completeness.
Revolutionary Invocation List: control water and control winds (two for one!), grasping hand, guards and wards, mirage arcana (must have Greater level hallucinatory terrain), phase door, reverse gravity, statue, transmute rock to mud and transmute mud to rock (two for one!), true seeing, and wall of iron.
I have some recommendations for this here... Permanent Image, Greater Teleport, Disintegrate (Object only), Magnificent Mansion, Gate (Travel only) is all. Everything else here is just peachy.
Just recommendations really...
Kaleidomantics is REALLY hard to capture without making it overpowered and having it scale properly, same with Biollurgy. Heuristicism is just down right impossible without giving the Gramarist Contingency to scale that wouldn't work because they lack spells to cast.
In my blunt opinion, I'd rather the Gramarist have Artificer Infusions since they capture the "creator of all things forever" look your going for