Empire 

Hargram will look around the area once they arrive.

(Dex save for Mantrap- -1

Does not make the save, takes 12 fire damage doubled to 24

Fallen

Just thinking things couldn't get worse, Carthage watches in horror as a flaming sphere floats into the enemy singeing him...

5  dex save

Either he's already in front of the mantrap or he walks up on his turn and get's burned...

(Youve still got your action and bonus action Burgen.) 

ooc:  Thought Carthage was last after mandrake...

Carthage will whip out his axe....taking two strikes against the plant beast.....

Attack: 28 Damage: 18

 Attack2: 14 Damage: 15