Adds two kinds of spellbooks, which can be found as dungeon loot.

Ancient Codices

Each ancient codex contains a randomly generated spell. These spells can summon creatures, call down lightning, send things flying, explode violently or do all of the above.

Each spell operates differently. Even if two spells both blow things up one might explode where you're looking, while another summons a llama behind you and then blows it up. The only way to identify how a given spell works is to test it, I'd recommend doing that far away from anything you care about.

Neo Codices

Neo Codices can produce the same effects as the ancient codices but instead of being random each spell can be programmed using a simple lisp language. For a list of options you can cast (help).