Wych Elm

A Wych Elm is a rare and innately magical tree that draws magical power out of the ground and stores it in its wood. Any wand cut from such a tree, may have centuries of stored magical power locked within it, yet only a demigod or wizard of exceptional skill can unlock and use such power, such as Ariel with the aspect of Isha.

Source
*: Warhammer Armies: Wood Elves (4th Edition)


 * : pg. 72

*: Warhammer Armies: Wood Elves (6th Edition)


 * : pg. 65