Roll 1d20. Add your attack bonus (+1 for anyone but a Warrior. They get +2). Add your STR or DEX mod, as applicable.<br/><br/>As written, these rules use the old descending AC. They convert to the more popular and current ascending AC by subtracting from 20...which is a 13. So if you get a 13 or better, that is a hit.<br/><br/>