Tree creature

The tree creature ("Dębostwór", or "Oak Critter", in the original Polish) is an entity that Geralt, Milva and Angoulême met in Caed Myrkvid. It looks similar to an oak tree, except of course being alive. Tree creatures are controlled by druids who use them to trap enemies.

Note
It may be a possible reference to the original J.R.R. Tolkien's Ent.

Baumwesen Arbre monstre Arboreo Dębostwór