I agree that Leyline would be sick, especially if you couple it with Chains.  imo, have both MD.

Masticore + Stuffy Doll imo:)

I figured it's about time I posted, though my old account seems to have disappeared...

Anyways, I piloted a deck recently at an ELD tournament (Top 8) that was a Brain Freeze combo deck, and upon Gush's unrestriction came up with a game plan much like the deck you formed volkboys, except I ran 3 Brain Freeze. 

Ultimately, I combo'd out Brain Freeze to 16+ copies only twice in the tournament.  Almost every win was 2 Brain Freeze back to back -- spells number 7 and 8 or 8 and 9, which is extremely easy to obtain.  I was able to do this with frequency due to tutors and running 3 copies of the win condition, so if I had to FoW or MisD, I still had the ample ability to kill.

And like you said, T. Crypt can just own people randomly at times, as can sideboarded Leylines.   And yes, Bomberman can at times just die to a timely BF.

I've been really washy though on if this deck is still viable -- Mindcensor is a serious pain, and once it resolves, it can really mess things up. 

Just my $0.02

~ Alden