The logic of "Wraith Wreath shouldn't give too many by only 1 skill" is questionable.

[Steorra]

The Elixirs was a base kit of Wendy which already existed before the tree. 

If we have no effect chancges here, the Wraith Wreath only makes the Elixirs become usable for Characters. It's more like the the portability skill of Winona's tree.

How could we say that "it's too much if only a portability skill could do effect to all varieties of Winona's devices"?

If the logic here work for Winona's as well, then portability of Winona would be more like :

1. Makes Winona's devices could be relocated, but they have "different" (weaker, just like elixir to character) effect after relocated.

2. Portability would be divide into many skills, like Portability I for relocating generators, Portability II for relocating spotlights, Portability III for relocating catapults.