Tawp64, Evire still doesn't hit hard enough to break a lot of Pokemon and gets OHKO'd in return, and no, he does not have enough power to beat Counter Blissey, Cross Chop or not.
Anyways, here's a set that served me well in the CC tournament, and has yet to truly fail me, but I've only done about 5 battles with it.
Bronzong@Chesto Berry
Sassy
Heatproof
31/x/31/31/31/0
252 HP/104 Def/152 SpD - it's the RestTalk Zong EV's with attack moved towards special defense to tank Fire Blasts even better.
~Rest
~Calm Mind
~Iron Defense
~Flash Cannon
The way you play this depends on the situation. Against special attackers, the plan is simple: Calm Mind and Rest your way to as much power as you need, and then proceed to hammer away with Flash Cannon. Against Choice Band users, you can easily Iron Defense to an acceptable level as most of them will not risk locking themselves into an ineffectual Earthquake, even though that would be fatal to this Bronzong set. Once you have enough defense, you can Calm Mind up, and Flash Cannon away.
Against mixed attackers, the fun really begins. A lot of them carry some sort of Fire move, which Heatproof Bronzong can typically take. Always Iron Defense on the first turn that way if they get wise from the pitiful fire damage, they'll be behind if they try to Earthquake. From there, use your judgment as to whether you want to Calm Mind for an offensive boost or keep going with Iron Defense.
With this set, do not be afraid to use Rest. Bronzong can typically take one critical hit from full health, but from a lower health, it's a risky game. Even if Chesto gets used up, Bronzong can typically survive the two turns of sleep.
What beats this set: Critical hits. Critical hits will bypass your stat ups, but if you keep at full health, you'll often be able to survive even the crits. I suppose a stat up sweeper utilizing Nasty Plot or Swords Dance could also beat this set, but I used this set with the idea that no one is really going to be using these moves, as the pokemon typically associated with them are fast, frail, hard hitters, which I suspect aren't very good in this metagame.