These are plants with consciousness. They are vine-like and move of their own accord. These plants have a semblance of intelligence in such a way that it is able to use tools to achieve its goals. For example; when fighting against a foe, they grapple around boulders and rocks and use the bludgeoning power of these to fight. They are also able to grapple and animate different objects such as armor, weapons, and even dead bodies making it look like it has come back to life. In the case of husks and corpses, they tend to inhabit them for an extended period of time because of the protection it provides.
These vine-like plants thrive deep within the Solfinir Woods. These plants do not go beyond the forest not because it cannot thrive outside of it, but because it likes the protection, nutrition, and isolation the forest provides.