Needs more Black

As the resident fae guy, I think you still need that perfect card that replaces the scions you took out.  I don't think grim lavamancer is that card since you'll exile all of your snapcaster fuel.  I'd go electrolyze if you're planning on including red.  Also, consider going into other colors besides red.  Black will give you cards like thoughtseize, confidant, and other really solid removal, if that's what you're concerned about.  White will give you path to exile, and maybe even something like resto angel will be cohesive, given the blinky-ninjas theme.