Well what I had in mind for this skin was that it was going to be a Ultimate Skin.
The price would be 1350RP.
The Skin would pull off a more Enhanced Vayne.
This Skin also would add Enhanced Effects and Animations.
This skin would add the effects of The Void (Purple Aura) + Bats around her.
When Vayne uses her Tumble (Q) She will have a Purplish Aura around her for a brief Second.
When Vayne hits the 3rd consecutive hit, The silver bolt will be slightly more noticable.
When Vayne uses Comdem and pulls off a terrain stun, the enemy champion has bats emerge from him/her.
When Vayne pulls off Final Hour (R) Vayne has Enlarged bats that come out.
Vayne passive will trigger as it always does, thus when the passive goes active, Vayne has a purple mist behind her.
Really if this Vaynetta doesn't work, I was thinking maybe Void Vayne?
To much typing on my phone.