I lik the set overall. Perhaps the thing I like the most out of it must be how fitting to hearthstone these arts are (specially to scholomance academy). However, I want to point out two things.
1: Bigglesworth is indeed a bit of a obstacle, I understand you want him to deathrattle then have him synergize with your cheap cards interaction stuff. However, I also think it could see stats adjustments (then again, your class has a lot of draw, so having all this cats is more a fatigue delay than value on its own.
2: Should'nt Deep Researcher shuffle a copy of the first card into your deck? And... does it count itself?