The Sacred Oak is the Sacred Treasure of the Isle of the Mists. The miniature oak tree was stolen by Abdul Alhazred, who spread rumors that the Winged Ones stole it. It is a miniature oak tree, and is very old.
Behind the scenesEdit
In romantic-era druid mythology and other pagan traditions the Oak tree is sometimes seen as the symbol of Thor. The druids live on an island where mostly grows Oak. So it is likely no mere coicicidence that their Sacred Treasure is the Sacred Oak, and they are concerned with the power to control weather, and storms on the islands (all of these appear to be inspired by romantic druidic Thor traditions).