Why on earth is Kalista getting a Blood Moon skin?
From the Journal of Justice Volume 1 Issue 22, only Ionians celebrated the Blood Moon Festival http://leagueoflegends.wikia.com/wiki/The_Journal_of_Justice:_Volume_1,_Issue_22
“This is the primary tradition of the festival,” explained Master Hana, an Ionian adjudicator. “Together, we identify that which plagues us. As we enter the darkness of night, which we call 'facing the Blood Moon', we confront them as one. With the rising of the sun, our fears and woes are cleansed, our spirits rekindled.”
So, basically, only Ionians participating in the festival should get this skin... if anyone should get it, it should be Irelia or Master Yi or someone else, not someone not even from the region.
A rioter also posted this:
"The mists swirl and part, wispy tendrils sliding hungrily across her undead arms. She pulls down her mask, silently creeping along the twisted treeline. With a hushed growl, she sends her specter to scout ahead. Its reddish glow turns the spooky green forest into an undulating mottled pattern of gray trees and black shadows. Even the moon above seems to dim. By its sinister light, she spots her prey ahead. Silently, she raises her spear back. The sharp, curved tip flows with bloody energy. With a grunt, she hurls it, and and springs forward in anticipation.
This does not relate towards the festival at all, this is just an insult.
Just because her particles may look pretty in red doesn't mean that you can give her a Blood Moon mask and call her name Blood Moon. At least call her something else and change the mask/take it away.