He's obscene with Pernicious Deed. Clear the board, regen the Monger, attack on the next turn. Pretty Basic, but it works like a charm.
The only way I see him making his way into extended is if a new B/G archetype appears with Deeds and Rancors. I don't know how successful it can be, but the synergy of the 3 cards is solid enough to make a consistent deck.
I don't think he'd work in Oath anyway. They key is to pull out a kill card with some form of evasion; being difficult to deal with is an added bonus, like Morphling and the Q. Phelddgrif. Man, I love the fact the Death Hippo is kicking arse in extended. Maybe he'll get more respect in type 2. But I'm starting another tangent here...
You want some really sneaky Monger tech? Try an aggro deck and put lure on the Monger. Not only does it clear the way for your other attackers, but he should definitely kill whatever blocks him, making him bigger and maybe wiping out your opponent's army. Not my idea but I wish it was.
Almost forgot, for my USA trash-talk revenge to Gizmo.
England sucks!...well not really. Actually, I quite enjoyed the country and the people on my 1 trip there. Okay, well, your petrol prices are very high! hah!
But I think your comment of about bandwagon players has more to do with the majority of all the other wannabe competitive Magic players in the world than just Americans. But, no I wouldn't mind seeing a few of those people throw themselves off a cliff.
And what does 'LMAO' mean? I'm not one for chat rooms.