Enemies

An intellect devourer resembles a walking brain protected by a crusty covering and set on bestial clawed legs. This foul aberration feeds on the intelligence of sentient creatures, taking over a victim's body on behalf of its mind flayer masters.

Encounters:Xanathars guild hideout

Mind flayers, also called illithids, are the scourge of sentient creatures across countless worlds. Psionic tyrants, slavers, and interdimensional voyagers, they are insidious masterminds that harvest entire races for their own twisted ends. Four tentacles snake from their octopus-like heads, flexing in hungry anticipation when sentient creatures come near.

In eons past, illithids controlled empires that spanned many worlds. They subjugated and consequently warped whole races of humanoid slaves, including the githyanki and githzerai, the grimlocks, and the kuo-toa. Conjoined by a collective consciousness, the illithids hatch plots as far-reaching and evil as their fathomless minds can conceive.

Since the fall of their empires, illithid collectives on the Material Plane have resided in the Underdark.

Encounters: Xanathars guild hideout

Duergar are dwarves whose ancestors were transformed by centuries living in the deepest places of the Underdark. That chthonic realm is saturated with strange magical energy, and over generations, early duergar absorbed traces of it. They were further altered when mind flayers and other Aberrations invaded and performed horrific experiments on them. 

Fueled by Underdark magic, those experiments left early duergar with psionic powers, which have been passed down to their descendants. In time, they liberated themselves from their aberrant tyrants and forged a new life for themselves in the Underdark and beyond.

Encounters: Xanathars guild hideout

A gray ooze is stone turned to liquid by chaos. When it moves, it slithers like a liquid snake, rising to strike.

Encounters: Xanathars guild hideout

Goblins are small, black-hearted humanoids that lair in despoiled dungeons and other dismal settings. Individually weak, they gather in large numbers to torment other creatures.

Encounters: Xanathars guild hideout

A troll is a large, chaotic evil giant known for its savage hunger and incredible regenerative ability. It has long limbs, sharp claws, and fights brutally in close combat, often making multiple attacks each turn. What makes trolls especially dangerous is that they rapidly heal from most injuries, but this regeneration stops if they take fire or acid damage, which is the key to defeating them.

Encounters: At the Yawning Portal.

A stirge is a small, bat-like monstrosity with a long, needle-like proboscis that it uses to latch onto creatures and drain their blood. They tend to attack in swarms, ambushing prey and clinging to them while feeding, which can quickly overwhelm weaker targets. Individually they’re fragile, but their ability to attach and steadily siphon health makes them surprisingly dangerous if not dealt with quickly.

Encounters: At the Yawning Portal.