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:

At a crystal walkway leading up a cliff (it is protected by an earth spirit)
They are telepathic
In a fight they run away if things start going badly
Difficulty... 450 Deadly

At an area of mud (close by is a silver statue with a red nose)
They are investigating an unusual type of fungi
In a fight they focus on anyone with religious icons
Possibly... they have a pair of Boots of Elvenkind
Difficulty... 450 Deadly

combatbat

A cauldron (group) of bats

3 Giant Bats
1 Swarm of Bats

At a quiet area of carved rooms (there is inscriptions in Undercommon telling a joke)
They are hiding from a nearby light source
In a fight they attack whoever is causing them the most pain
Possibly... they have 1d4 Potions of Climbing
Difficulty... 400 Deadly

combat

A group of gnomes

1 Deep Gnome (Monster Manual p.164)
2 Cockatrices
1 Badger

At a cave covered with inscriptions (the area is protected by an undead)
They are rearming a trap
In a fight they surrender if things go badly
Possibly... they have a Wand of Secrets
Difficulty... 620 Deadly

At a sparkling waterfall into an overgrown lake (nearby is a bulky shale slab)
They are carving on tunnels
In a fight they run and hide if things go badly
Possibly... they have an Oil of Etherealness
Difficulty... 600 Deadly