Base Class: Wizard
Those who were able to escape the horrors of the attacks in Val'cia on a man made island that was enchanted to float above the clouds. This island was known as Arcanguard to all those who lived on it and the mages who were left behind in hiding simply called it a myth.
Counter Measure
Starting at 2nd level you gain the ability to subtly your spells.
Well Learned
Starting at 2nd level you choose 2 types of magic. When enscibing the spells of those types take half the time and price.
Calloused Caster
Starting at 6th level you gain an additional 2hp per wizard level as well as you also add 2 to all levels afterwards.
8th level-You gain resistance to non magical slashing, piercing, and bludgeoning damage.
Drifter
Starting at 10th level your understanding of the arcane safe haven has reached an all time high. You can now teleport yourself + your intelligence modifier of willing creatures to Arcanguard. Once per long rest.
Know It All
Starting at 14th level all spells you inscribe into your spell book are done at half price and reduced to 10 minutes per spell level to transcribe.
Sorry dude, this could do with some polishing
The language is VERY vague, and I can barely tell what the subclass can actually do. It is also generally poorly written, for example, the first second level feature, 'counter measure,' is written, in, a, um, lets just say, strange way? Like I have no idea what ' you can subtly your spells' is meant to mean, so that could do with some work.
Another issue is balance, for the 'well learned' feature you get, what I assume, is meant to be the 'savant' type features from some of the other wizard subclasses, but just better, like just objectively better, with no drawback. Also the wording is very hard to understand.
The other thing I have a gripe with is the difficulty to put his into an actual game, as the entire subclass is tied to one place, and that could royaly f up any DM's campaign if you decide to use the 10th level feature.
The rest of my complaints are mainly just standard etiquette, like spelling, grammar, and language, so that is all.
Nice try, dude, and keep at it, but maybe look at some of the more popular homebrew and look at their language and how they worded their features, or hell, even better, look at some of the official dnd subclasses to get an idea of how they word it and how they're built.
Hope this helped! :)
(also, the resistance to all non magical piercing, bludgeoning, and slashing damage is way OP, so look out for that)