D&D Random Encounters for 5E - Underdark

Encounters might be a meeting with a patrol of guards at an old shrine or a familiar looking for aid. It might be an ambush in the wilderness, a stand-off in the city or a monster in the Underdark.
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

5 Violet Fungi
3 Myconid Sprouts (Monster Manual p.230)
1 Myconid Adult (Monster Manual p.232)

At a large cave with large stalagmites and stalactites and a stalactite ready to fall (by a crossing of ancient stepping stones over a clear river)
They are fleeing a nearby disaster
In a fight they focus all their attention on the most heavily armored foes
Possibly... they have
Difficulty... 760 Deadly

combatdwarf

3 Guards

At a patch of white edible fungi and a cage with a beast (there is angry graffiti in Giant)
They are exploring a secret entrance
In a fight they retreat when half their number have fallen
Possibly... during the fight a monster enters the edge of the battlefield
Difficulty... 150 Easy

combatduergar

A group of duergar

1 Duergar
3 Giant Lizards

At a crumbling clifftop with handholds down (nearby is a wide cave with large stalagmites and stalactites)
They are carving on tunnels
In a fight they run and hide if things go badly
Possibly... during the fight someone runs away unexpectedly
Difficulty... 700 Deadly

combathobgoblin

2 Hobgoblins

At a fish-filled stream surrounded by rubble (near a narrow ravine)
They are trapped in a hole
In a fight they prefer to capture their foes
Possibly... they have a Potion of Mind Reading
Difficulty... 300.0 Hard

combatvermin

1 Ankheg

At a fungi-covered catacombs (which is protected by an awakened tree)
They are telepathic
In a fight they attack whoever looks most dangerous
Possibly... they have a Potion of Gaseous Form
Difficulty... 450 Deadly