The Thousand-Year Oak

From publisher blurb: This adventure can be played as a stand-alone one-shot adventure or as part of an ongoing campaign in the world of Avamir. This adventure is intended for a 3-5 member party of level 2 adventurers. In this second adventure, the characters will meet the anonymous patron that sent them into Valtara’s sanctum in the first adventure. They learn that he is in need of able and willing adventures that he can rely upon in retrieving more items from around Avamir, and with his sights set on a rare and magical plant from secretive elven kingdom of Traymin, he calls on the skills of the adventurers once more.