The Thanatäe are Mystical Elf-trees that produce magic berries called Amaranth, which have many mystical powers.

The secrets of these mystical trees are known only to the elves and the race of Treants on Corwyn. The Elf-trees are very rare and usually only found in elvish forests. The trees have yellow tan bark, and leaves that are the brightest green, tinged with gold. From the tree-branches are found small golden berries called the Amaranth, which have mystical powers for healing and maintaining good health.