5e D&D Combat Encounters - Underdark

Combat Encounters include creature groups, hazards and lone npcs. Maybe a lost lizardfolk, a forest fire or a talkative druid
The Underdark is a place of twisting tunnels, constant darkness and strange magic. Encounters might occur in a forest of fungi, amid giant stalactites or by the side of a gaping chasm. It is a place of elemental earth and gates to far realms. Home to fungi creatures, the dark elves and aberrations from the Far Realms.

tools for - dnd5e encounters underdark

level: party size: terrain: sources: type:

combatfungi

2 Swarms of Beetles (Monster Manual p.338)

At a forest of tall grey-stalked mushrooms (it is associated with storm magic)
They are consuming an unusual type of fungi
In a fight they attack whoever is causing them the most pain
Possibly... they have a Potion of Gaseous Form
Difficulty... 300.0 Hard

combat

1 Nothic

At an enchanted temple to a power of light (there is a strong scent of something strange)
They are trapped in a rockfall
In a fight they quickly retreat and try attacking again from range
Difficulty... 450 Deadly

combat

1 Ochre Jelly

At a shallow trench by a garden of gleaming wire-like vines (there are numerous fireflies)
They are are ending a journey or migration
In a fight they focus all their attention on foes attempting to hide
Possibly... during the fight a wall, tree or building starts to collapse or fall
Difficulty... 450 Deadly

combatduergar

1 Duergar

At an area of white edible lichen. There is an inscribed limestone slab with a patch of yellow moss (close to an abandoned mine entrance)
They are telepathic
In a fight they single out the most dangerous warrior
Difficulty... 200 Medium

combat

1 Quaggoth (Monster Manual p.256)

At a garden of purple-cap mushrooms studded with large holes surrounded by thick dust (near a sparkling cliff)
They are carving on tunnels
In a fight they focus all their attention on foes with ranged weapons
Possibly... during the fight someone receives a magical message
Difficulty... 450 Deadly

combatvermin

2 Swarms of Insects

At an area of phosphorescent vegetation (there is an inquisitive group of flies in the area)
They are telepathic
In a fight they attack whoever is causing them the most pain
Possibly... they have a Scroll of Protection - Undead
Difficulty... 300.0 Hard

combat

1 Nothic

At a stone path leading up a steep slope (there are fragments of bone)
They are hiding from a nearby light source
In a fight they run away if things start going badly
Difficulty... 450 Deadly

combatspider

2 Giant Spiders

At an area of dead lichen. There is an electrified metal door with a rectangular hole (there are fragments of obsidian)
They are investigating an unusual type of fungi
In a fight they attack whoever is nearest
Possibly... during the fight someone receives a magical message
Difficulty... 600.0 Deadly

combat

3 Grimlocks

At a cave-in (it is a dead magic zone (similar to an antimagic field))
They are investigating an unusual type of fungi
In a fight they try to capture anyone with religious icons
Possibly... they have an Immovable Rod
Difficulty... 300 Hard

combatvermin

1 Giant Scorpion

At a giant statue and a crystal rock (nearby is an ash-covered mine entrance)
They are consuming an unusual type of fungi
In a fight they attack whoever is nearest
Possibly... during the fight someone notices a large fire nearby
Difficulty... 700 Deadly