(Briar)vex

Briarvex usually don't like the woodfolk in the feywild, they seem to be quite aggressive and have no problem with environmental damage as long as the woodfolk have to suffer from that.
==Mechanical==
Two briarvexes who work in conjuncture can cast the spell Entangle that lasts for 1 round. Normally two Briarvexes work together and recast that spell all the time so even if someone breaks free they are entangled again. Briarvexes are immune against the Entangle effect of other briarvexes.
If they hit someone they can deal additional damage by spending a swift action that simulates the briarvex planting a thorn in the wound from their first hit and let the thorn grow as a swift action.
It seems Briarvex are either minions or are significantly more powerful.