Riot Games has introduced new Coven skin for LeBlanc, Morgana, and Zyra and they are panned to hit live servers on patch 10.8.
Camille and Lissandra were the first champions to get Coven skin line and now LeBlanc, Morgana, and Zyra are about to join them. Zyra is also getting Prestige Coven skin. Coven LeBlanc and Zyra are set to be 1350 RP each. And Coven Morgana is going to be a Legendary skin.
Coven LeBlanc Splash
Coven Morgana Splash
Coven Zyra Splash
Prestige Zyra Skin
All the skins will be available in the PBE for testing purposes and will go live in the patch 10.8.