Basic Burning/Ash Transition Material, available on GitHub.
To see the usage look at the level blueprint.
Fire effect looks a bit suddenly-come-in because I forgot the timeline curved xD
http://giphy.com/gifs/3o6ZtotyXoOAgYH56g
Thank you for sharing this! It looks awesome, and seems simple to do - always a winning combination!
Very cool, thanks for sharing 
really nice!!! thanks for sharing!