Eternum Cassiopeia is a terrible skin.

The champion model is just bad. It doesn't look "cool", it doesn't look badass, it doesn't look beautiful, it just looks bad, and red. The skin is completely uninspired, it's as if Riot thought : "Hey, the Eternum skin line is pretty cool, so let's use it on a champ who badly needs a new skin." The concept doesn't fit her at all, because, compared to other champions in the skin line, Casseopeia isn't just a monster, she's half human, half monster. So it just seems they made the skin so people stop complaining about Cass having no new skin. I'd rather have had no new skin than this utter disappointment.