Warp Elementals

First encountered by the party as they unexpectedly appeared in Morrow.
These elementals appeared to formulate from the collapsing portals themselves, and then focused on igniting and possibly consuming the wooden constructs around the town square. It was only when attacked did the creatures seem to notice anything else.
Standing too close to these creatures caused the individual to take damage from the strange green fire, and upon death the creatures exploded.