Entangling Roots can be found on clearings on the path through the Wilds mission. When a player comes near them, roots and plants will shoot out of the ground, blocking all exits from the clearing. When the creature is killed, the roots will wither, opening the way. Entangling Roots are often found in the company of several hidden Moss Scarabs and Life Pods. Some of them come out of the ground as soon as a player comes near and some when the Entangling Roots is killed.
The roots blocking the way can often be used to your advantage: have the warriors advance at the same time and spellcasters stay back, so that only the warriors will be caught on the clearing with the monsters. This way the spellcasters are out of reach from the Moss Scarabs, but can still participate in the fight. It usually is best to first kill the Scarabs and Life Pods, before taking on the Entangling Roots. This way you won't have to fight the two spawns at once.
This creature's corpse will not disappear after some time, much like a Boss.
This creature, while able to attack and cast spells, cannot move. Thus it is very vulnerable to Area of Effect spells, such as Meteor Shower.