Glossary

*Ingested Poison, 150 GP* A creature subjected to Assassin’s Blood makes a DC 10 Constitution saving throw. On a failed save, the creature takes 6 (1d12) Poison damage and has the Poisoned condition for 24 hours. On a successful save, the creature takes half as much damage only.

A burning creature or object takes 1d4 Fire damage at the start of each of its turns. As an action, you can extinguish fire on yourself by giving yourself the Prone condition and rolling on the ground. The fire also goes out if it is doused, submerged, or suffocated.

*Inhaled Poison, 500 GP* A creature subjected to Burnt Othur Fumes must succeed on a DC 13 Constitution saving throw or take 10 (3d6) Poison damage, and it must repeat the save at the start of each of its turns. On each successive failed save, the creature takes 3 (1d6) Poison damage. After three successful saves, the poison ends.

*Magical Contagion* Cheaply made potions and elixirs are sometimes tainted by Cackle Fever, which affects Humanoids only (gnomes are strangely immune). A creature suffers the following effects 1d4 days after infection: Fever. The creature gains 1 Exhaustion level, which lasts until the contagion ends on the creature. Uncontrollable Laughter. While the creature has the Exhaustion condition, the creature makes a DC 13 Constitution saving throw each time it takes damage other than Psychic damage. On a failed save, the creature takes 5 (1d10) Psychic damage and has the Incapacitated condition as it laughs uncontrollably. At the end of each of its turns, the creature repeats the save, ending the effect on itself on a success. After 1 minute, it succeeds automatically. Fighting the Contagion. At the end of each Long Rest, an infected creature makes a DC 13 Constitution saving throw. After the creature succeeds on three of these saves, the contagion ends on it, and the creature is immune to Cackle Fever for 1 year. Spreading the Contagion. Any Humanoid (other than a gnome) that starts its turn within a 10-foot Emanation originating from a creature infected with Cackle Fever must succeed on a DC 10 Constitution saving throw or also become infected with the contagion. On a successful save, the Humanoid can’t catch the contagion from that particular infected creature for the next 24 hours.

*Deadly Trap (Levels 1–4)* Trigger: A creature crosses a trip wire Duration: Instantaneous This trap uses a trip wire to collapse an unstable section of ceiling. The trip wire is 3 inches off the ground and stretches between two weak supports that topple when the trip wire is pulled. The first creature that crosses the trip wire causes the supports to topple and the unstable section of ceiling to collapse. Each creature beneath the unstable section of ceiling must succeed on a DC 13 Dexterity saving throw, taking 11 (2d10) Bludgeoning damage on a failed save or half as much damage on a successful one. Rubble from the collapse turns the trapped area into Difficult Terrain. Detect and Disarm. As a Search action, a creature can examine the trapped area and make a DC 11 Wisdom (Perception) check, detecting the trip wire and the unstable section of ceiling on a successful check. Once detected, the trip wire can be easily cut or avoided (no ability check required). At Higher Levels. You can scale the trap for higher levels by increasing the damage and the save DC, as shown in the following table. Levels Bludgeoning Damage Save DC 5–10 22 (4d10) 15 11–16 55 (10d10) 17 17–20 99 (18d10) 19

*Contact Poison, 200 GP* A creature subjected to Crawler Mucus must succeed on a DC 13 Constitution saving throw or have the Poisoned condition for 1 minute. The creature also has the Paralyzed condition while Poisoned in this way. The creature repeats the save at the end of each of its turns, ending the effect on itself on a success.

Swimming through deep water (more than 100 feet deep) presents additional challenges because of the water’s pressure and cold temperature. After each hour of swimming in deep water, a creature that lacks a Swim Speed must succeed on a DC 10 Constitution saving throw or gain 1 Exhaustion level.

A creature requires an amount of water per day based on its size, as shown in the Water Needs per Day table. A creature that drinks less than half the required water for a day gains 1 Exhaustion level at the day’s end. Exhaustion caused by dehydration can’t be removed until the creature drinks the full amount of water required for a day. See also “Exhaustion.” Water Needs per Day Size Water Tiny 1/4 gallon Small 1 gallon Medium 1 gallon Size Water Large 4 gallons Huge 16 gallons Gargantuan 64 gallons

Demonic Possession arises from the chaos and evil of the Abyss and commonly besets creatures that interact with demonic objects or linger in desecrated locations, where demonic spirits await victims. A creature that becomes the target of Demonic Possession must succeed on a DC 15 Charisma saving throw or be possessed by a bodiless demonic entity. Whenever the possessed creature rolls a 1 on a D20 Test, the demonic entity takes control of the creature and determines the creature’s behavior thereafter. At the end of each of the possessed creature’s later turns, the creature makes a DC 15 Charisma saving throw, regaining control of itself on a success. After finishing a Long Rest, a creature with Demonic Possession makes a DC 15 Charisma saving throw. On a successful save, the effect ends on the creature. A Dispel Evil and Good spell or any magic that removes a curse also ends the effect on it.

*Inhaled Poison, 300 GP* A creature subjected to Essence of Ether must succeed on a DC 15 Constitution saving throw or have the Poisoned condition for 8 hours. The creature also has the Unconscious condition while Poisoned in this way. The creature wakes up if it takes damage or if another creature takes an action to shake it awake.

When the temperature is 0 degrees Fahrenheit or lower, a creature exposed to the extreme cold must succeed on a DC 10 Constitution saving throw at the end of each hour or gain 1 Exhaustion level. Creatures that have Resistance or Immunity to Cold damage automatically succeed on the save.

When the temperature is 100 degrees Fahrenheit or higher, a creature exposed to the extreme heat and without access to drinkable water must succeed on a Constitution saving throw at the end of each hour or gain 1 Exhaustion level. The DC is 5 for the first hour and increases by 1 for each additional hour. Creatures wearing Medium or Heavy armor have Disadvantage on the save. Creatures that have Resistance or Immunity to Fire damage automatically succeed on the save.

A creature that falls takes 1d6 Bludgeoning damage at the end of the fall for every 10 feet it fell, to a maximum of 20d6. When the creature lands, it has the Prone condition unless it avoids taking any damage from the fall. A creature that falls into water or another liquid can use its Reaction to make a DC 15 Strength (Athletics) or Dexterity (Acrobatics) check to hit the surface head or feet first. On a successful check, any damage resulting from the fall is halved.

*Nuisance Trap (Levels 1–4)* Trigger: A creature crosses a trip wire Duration: Instantaneous A falling net trap uses a trip wire to release a weighted, 10-foot-square Net suspended from the ceiling. The trip wire is 3 inches off the ground and stretches between two columns or trees. The first creature that crosses the trip wire causes the Net to fall on it. The target must succeed on a DC 10 Dexterity saving throw or have the Restrained condition until it escapes. The target succeeds automatically if it’s Huge or larger. A creature can take an action to make a DC 10 Strength (Athletics) check, freeing itself or another creature within its reach from the Net on a successful check. Detect and Disarm. As a Search action, a creature can examine the trapped area and make a DC 11 Wisdom (Perception) check, detecting the trip wire and the suspended Net on a successful check. Once detected, the trip wire can be easily cut or avoided (no ability check required). Destroy the Net. Reducing the Net to 0 Hit Points frees any creature trapped in it (see “Adventuring Gear” for the Net’s statistics). Set the Trap. A creature that has Thieves’ Tools and all the trap’s components (including a Net) can try to set a falling net trap, doing so with a successful DC 13 Dexterity (Sleight of Hand) check. Each attempt to set this trap takes 10 minutes. At Higher Levels. You can scale the trap for higher levels by increasing the weight of the Net, which increases the save DC and the DC of the Strength (Athletics) check as follows: DC 12 at levels 5–10, DC 14 at levels 11–16, or DC 16 at levels 17–20.

*Deadly Trap (Levels 1–4)* Trigger: A creature moves onto a pressure plate Duration: Instantaneous, and the trap resets at the start of the next turn When a creature moves onto this trap’s pressure plate for the first time on a turn or starts its turn there, a nearby statue exhales a 15-foot Cone of magical flame. The statue can look like anything, such as a dragon or a wizard. Each creature in the Cone must succeed on a DC 15 Dexterity saving throw, taking 11 (2d10) Fire damage on a failed save or half as much damage on a successful one. Detect and Disarm. A Detect Magic spell reveals an aura of Evocation magic around the statue. As a Search action, a creature within 5 feet of the statue can examine it and make a DC 10 Wisdom (Perception) check, detecting a tiny glyph on the statue on a successful check. Once the glyph is found, a character can take a Study action to examine it and make a DC 15 Intelligence (Arcana) check, ascertaining that the glyph means “fire” on a successful check. As an action, a character can use a sharp tool to deface the glyph, which disarms the trap. As a Search action, a creature can examine the section of floor that forms the pressure plate and make a DC 15 Wisdom (Perception) check, detecting the pressure plate on a successful check. Wedging an Iron Spike or similar object under the pressure plate prevents the trap from triggering. At Higher Levels. You can scale the trap for higher levels by increasing the damage and the area of effect, as shown in the following table. Levels Fire Damage Area of Effect 5–10 22 (4d10) 30-foot Cone 11–16 55 (10d10) 60-foot Cone 17–20 99 (18d10) 120-foot Cone

A creature can be immersed in frigid water for a number of minutes equal to its Constitution score before suffering any ill effects. Each additional minute spent in frigid water requires the creature to succeed on a DC 10 Constitution saving throw or gain 1 Exhaustion level. Creatures with Resistance or Immunity to Cold damage automatically succeed on the save, as do creatures that are naturally adapted to living in ice-cold water.

Everything within an area of heavy rain or heavy snowfall is Lightly Obscured, and creatures in the area have Disadvantage on all Wisdom (Perception) checks. Heavy rain also extinguishes open flames.

*Nuisance Trap (Levels 1–4)* Trigger: A creature moves onto the pit’s lid Duration: Instantaneous This 10-foot-deep pit has a hinged lid constructed from material identical to the surrounding floor. When a creature moves onto the lid, it swings open like a trapdoor, causing the creature to fall into the pit. The lid remains open thereafter. A creature that falls into the pit takes 3 (1d6) Bludgeoning damage from the fall. Detect and Disarm. As a Study action, a creature can examine the section of floor that forms the pit’s lid and make a DC 15 Intelligence (Investigation) check, detecting the pit on a successful check. Once the pit is detected, an Iron Spike or a similar object can be wedged between the pit’s lid and the surrounding floor to prevent the lid from opening, thereby making it safe to cross. The cover can also be held shut using Arcane Lock or similar magic. Escape. A creature needs a Climb Speed, climbing gear, or magic such as Spider Climb to scale the pit’s smooth walls. You can make the pit easier to escape by adding cracks in the walls big enough to serve as handholds and footholds. At Higher Levels. You can scale the trap for higher levels by increasing the pit’s depth and damage, as shown in the following table. Levels Pit Depth Bludgeoning Damage 5–10 30 feet 10 (3d6) 11–16 60 feet 21 (6d6) 17–20 120 feet 42 (12d6)

Traveling at altitudes of 10,000 feet or higher above sea level is taxing for most creatures because of the reduced amount of oxygen in the air. Each hour such a creature spends traveling at high altitude counts as 2 hours for the purpose of determining how long that creature can travel (see “Travel Pace”). Creatures can become acclimated to a high altitude by spending 30 days or more at this elevation. Creatures can’t become acclimated to elevations above 20,000 feet unless they are native to such environments.

*Inhaled Poison, 250 GP* A creature subjected to Malice must succeed on a DC 15 Constitution saving throw or have the Poisoned condition for 1 hour. The creature also has the Blinded condition while Poisoned in this way.