>>5454448>>5456842>>54568431. Build a carpenter on orange tile. With exquisite lumber and rubber being gathered in droves a proper industry gathered to properly refine the materials into something useful.
2. Spend 10 mana on a necromancy spell called Servitors to increase army size. The next great magical innovation came from the servants. Desiring to free themselves from drudgery so they could continue their own study of magic they looked into the newly acquired necromantic leyline for inspiration. Feeling the strange form of life that exuded from it they channeled it into the corpses of slain livestock. Shockingly they began to stir once more and follow the will of their creators. Quickly these undead became popular in the form of skeletons as they could be made incredibly compact and light for storage, their bones could be easily shaped to purpose with biomancy, and they were much easier to keep hygienic rather than having to worry about sustaining rotten flesh. Creating a new underclass for the Servants to avoid menial work and let them practice their magic at the same time!
GO TO WAR AGAINST THE OATHBREAKING TRESPASSERS