Speak to him to get flagged to use the Hunter's Leap portal beside him.
Show him Lilitha's Bow for a one time bonus of 300,000xp.
Lore & Dialog
Warden tells you, "A great hunter, Lilitha, onced lived in a place called Hunter's Leap. When she was young she honed her skills in Archery as well as crafting weapons here."
Warden tells you, "You can still discover a great number of bows she left behind."
Warden tells you, "Eldrista the Adventurer has spent much time learning of Lilitha and has put great effort into making Lilitha's old bows usable again."
Warden tells you, "Take the portal to Eldrista, enter the Hunter's Leap and find Lilitha's Broken Bow. Make sure she fixes it for you and show it to me."
Warden tells you, "I'll reward you once I've seen the a working bow that once belonged to the great hunter Lilitha."