Lesovyk Rune

The Lesovyk Rune was one of the many runes that had to be used to open the Sacred Tree. It takes the shape of an acorn.

Role In Twisted Thicket
The rune was caught in a tree hole in the forest, and once pulled out, the dryads within the tree escaped and began an attack on the one who removed it.

Trivia

 * A Leshy, AKA Lesovyk, is a Scandinavian woodland spirit.