The Bugbear Assassin has infiltrated the Emerald Grove, and is stalking Nadira as easy prey on the high hill east of the gate. If left unchecked, he kills Nadira.
Although the Bugbear Assassin is a lone enemy, his Brute passive can stack up significant damage on a strike, making up for his average Strength. His Morningstar is coated with Basic Poison. Through his Tenacity passive, the Poisoned condition will always be applied.
Interrupting the bugbear in the midst of his ambush results in his being Surprised, allowing the party a free round of actions.