This deck really looks like a creative work of art. I do have a few pointers that might give you some
inspiration or room for growth on this deck build:
1)
Baral, Chief of Compliance has a good effect that makes your important spells cost less and gives you that card advantage over your opponent. Because of the discard ability and due to you having your
Bedlam Reveler you may want to add some more spells in this deck that have MADNESS to them.This way your actual discard gives you a bonus rather than just losing out on a card (which means your side board should be main boarded).
2) The Counter spells are going to be good, but if you want your opponent to feel the sting of the
fevered visions on a consistent basis then you are going to want to bounce things back to their hands on a consistent basis. This way you make sure that they always have at least 4 cards in their hands at the end of each of their turns. If you found a way to remove specific cards from their hands then it would be an even greater strategy because then they'd only have cards you wouldn't mind them having.
3) Also it really depends on how you want to run this deck. If you're going to be aggressive with the build then maybe you'd want more creatures such as the
pyre hound that keep getting bigger. Or if you want simply the combo win/ mid-ranged style of play then focus heavily on making the
Fevered Visions your crown jewel for the deck. In the end it's solely up to you, just make sure you have plenty of space in the side board against unfavorable match-ups.