This could be designs for Oddy Smog's Misadventure 2!! But they are DARKLINGS by Juan Casini, via Behance
Mighty Monsters - Rise of Minions (iOS Game) on Behance
Spark by FuliKuri
Reaper Soraka R by JasonKeyser
Mobile Game GUI Pack 3 - User Interfaces Game Assets
PROJECT: Leona's R Impact by JasonKeyser
Fantasy Game Button Maker by Vectricity Designs, available now to help you build amazing buttons.