If you've ever tried to run a Dungeons & Dragons session using just a standard LLM window, you know exactly where it falls apart. You ask for a roll. The model simulates it. It feels okay until you realize the probabilistic math isn't quite hitting the mark, or worse, it forgets the nuances of advantage/disadvantage rules. Then comes the heavy lifting—calculating damage while factoring in resistances, vulnerabilities, and proficiency bonuses. This is where 'hallucinated randomness' become...