Cool! Golems! I like that golemancy is a little mini-game rather than just a spell you can cast. Having to decide between material, size, and complexity is a neat idea, and encourages building golems that are specially made for a particular function. I also like how each aspect is divided into tiers, rather than having, say, a list of specific options. It keeps golemancy nice and freeform while still providing game-y knobs and levers to play around with while building.