I worked on this spot with the Bigstar team in NYC. Here is a look at some of my FX work in progress playblasts, R&D, tests and some extras that didn't make the final cut for this Game of Thrones Tease.
The spot: vimeo.com/joshclos/gameofthrones
For more information on the FX, see my website. joshclos.com/gameofthrones