Kalista only have three skin, two of them aren't even available for purchase in the moment. Her latest skin was released 3 years ago, and the only skin that's available to pruchase was released 5 years ago. I think it's time for another Kalista skin. I think Project Kalista or Omega Squad Kalista would be really cool
Doesn't belong in Concepts since you're just complaining she hasn't received one, not mentioning any concept.
Champions get skins based on popularity. People don't buy Kalista skins, so Kalista doesn't get new skins.
I think Elderwood Kalista would look cool. Or if that doesn't work maybe an infernal skin.
I think a purple coloured dark waters Kalista would fit her perfectly. Honestly she has so much potential for great skins it's just her low popularity that puts her behind but imo she should receive something. Better than nothing just like they did with mecha asol and Ivern 
