Hexical is likely the biggest and feature-rich Hexcasting addon, adding new patterns, spells, and items. It is my passion project where I add all the little things I feel would make Hexcasting more enjoyable, at least for me, without undermining what in my mind makes Hexcasting so fun and special.
Hexical is a kitchen sink addon. I will add whatever I think is fun and while I try to have balance, that is not quite a priority.