A Cylinder is an area of effect that extends in straight lines from a point of origin located at the center of the circular top or bottom of the Cylinder. The effect that creates a Cylinder specifies the radius of the Cylinder’s base and the Cylinder’s height. A Cylinder’s point of origin is included in the area of effect. D2 0 Te s t D20 Tests encompass the three main d20 rolls of the game: ability checks, attack rolls, and saving throws. If something in the game affects D20 Tests, it affects all three of these rolls. The GM determines whether a D20 Test is warranted in a given circumstance. See also “Playing the Game” (“D20 Tests”). Damage Damage represents harm that causes a creature or an object to lose Hit Points. Damage Roll A damage roll is a die roll, adjusted by any applicable modifiers, that deals damage to a target. See also “Playing the Game” (“Damage and Healing”). Damage Threshold A creature or an object that has a damage threshold has Immunity to all damage unless it takes an amount of damage from a single attack or effect equal to or greater than its damage threshold, in which case it takes that entire instance of damage. Any damage that fails to meet or exceed the damage threshold is superficial and doesn’t reduce Hit Points. For example, if an object has a damage threshold of 10, the object takes no damage if 9 damage is dealt to it, since that damage fails to exceed the threshold. If the same object is dealt 11 damage, it takes all of that damage. Damage Types Attacks and other harmful effects deal different types of damage. Damage types have no rules of their own, but other rules, such as Resistance, rely on the types. The Damage Types table offers examples to help a GM assign a type to a new effect. Damage Types Ty p eExamples AcidCorrosive liquids, digestive enzymes BludgeoningBlunt objects, constriction, falling ColdFreezing water, icy blasts FireFlames, unbearable heat ForcePure magical energy LightningElectricity Ty p eExamples NecroticLife-draining energy PiercingFangs, puncturing objects PoisonToxic gas, venom PsychicMind-rending energy RadiantHoly energy, searing radiation SlashingClaws, cutting objects ThunderConcussive sound