If the Critical Roll is a hit against the target creatures AC, then the original attack is a critical hit. Otherwise it's a regular hit. Clerics, Rangers and Paladins use Divine spells. The DM portrays nonplayer characters, makes up the story setting for the other players, and serves as a referee. Most characters will gain a feat at first level, and then one every level divisible by 3.
Some classes gain bonus feats right off the bat, and some gain bonus feats later on.
A type of saving throw, related to a characters ability to withstand damage thanks to his physical stamina. The amount of damage your character can take before being knocked unconscious. If this number gets bellow -10 your character is dead. After rolling a d20, the high roll is the first to take action. After all initiative rolls are completed that is the order in which combat will take place unless there is a choice of delay or focus made by one of the combatants.