Hands are needed for crafting. The smithing of objects, be it weapons or armour, or jewelry. The fixing of things, be it weapons or clothing. The skills of drawing, painting and sculpting. The art of techniques of the alchemist, for transmuting materials.
Intelligence is needed.
Includes siege engines. Knowing how to recognize their followers, symbols and rituals. Knowing the various illegal activities of thieves, knowing or recognizing them or the tools of their trade. Arcane is the same knowledge, but of magic. The skills to communicate with other people.