I really love this game. It's very well developed and has a very elegant system of tags and stats. I think it might have been helpful to distinguish between {powers} and [materials] in the way the tags were presented. The aesthetic is also very cute. Over all a very open and inviting system to play and build in. 

The rules for conflict insist that they can be used for non combat situations, but most of the tools provided seem focused on physical confrontation. Not the biggest deal, but some tools for interesting social conflict would have been interesting. 

I can't say for sure without playing a little, but is suspect you'd end up in a lot of situations where you'd be rolling a raw d20 with no or a very low bonus. The success distribution may end up feeling kind of brutal.