I think i'll use nParticles and driving with fluid and curlNoise. All dynamics in Maya, render with mentalRay and compositing with Nuke. for the impact maybe something like this : https://vimeo.com/81277405
Hey there, I play LoL for 3 years and I work in VFX for animation movies, so I'm in ! For the first spell I imagine something with energy. I'll work with Maya/nuke I'm posting some ref for my spell. PS : sorry for my english i'm French. =)