Attack Check: To see if an Attack Hits Damage Check: To Calculate Damage Resistance Check: To Calculate Resistance to an Effect Terms Defense Mod: the Defense Modifier (Dodge, Parry, etc.) of the Defending Target Attack Roll: Roll a D20 and Add your Damage Modifier (Close Combat, Ranged Combat, etc.) Crit: You Gain an Additional Effect Read the Critical Hit Section in the Player Handbook. Damage: Your rank in your Damage Power Toughness Roll: Roll a D20 and Add your Toughness