[@BladeSS4]
Slayer magic in general I would personally steer clear of. Maker Magic should be alright though, so long as it isn't ice or wood (they're the only cannon ones I can really think of). Mainly due to not wanting a billion and one copycats. Also hence why we should look at who has maker magic >.>
(I think we have Crystal/diamond wizard and an energy make wizard)
For Slayer magic...well it's complicated but not complicated at the same time. Basically we don't want a billion slayers running around f*cking sh*t up XD On the other hand Slayer magic is also super duper OP as hell so...yeah. Also not sure if we're accepting any right now, but I think we might be. Might.
I lost my list of slayers after my laptop died >.>

Although on a separate note I was thinking of making someone based off the Shade Magic. That barely got touched on in the cannon and I think there's room for improvement on it.