I like this concept! I would've never thought of it myself.
Maybe some Ryko + CotLB would be good in here to fill up the grave for Catoblepas's effect. The Calculator is another Light monster that would go well, considering that you use so many high level monsters.
Also, this is just my opinion but Dimension Wall seems a little out of place with the control-type style that Clear World gives(if your opponent uses Darks, he won't be able to attack and Dimension Wall will just be sitting there).
I love the deck idea.