So hows this for an interesting Core: Cofagrigus and Umbreon. I realize that Umbreons' been all but cast out from the public eye recently with all the mandibuzz fervor, and lacking knock off really sucks, but he has fantastic bulk (especially special bulk), and a set of weaknesses and resistances that almost perfectly compliment Cofagrigus'. More important Mandibuzz's Ice, Rock and Lightning weaknesses make it sometimes difficult to synergize with, whereas Umbreon's Bug and Fighting weaknesses are far more manageable. While they don't resist nearly the same amount of types that the Venutran combo does I think their interesting movepools and overall solid defensive stats deserve some attention. Their abilities are also very useful, allowing them to neutralize or cripple a large part of the metagame with some good prediction.
I haven't had a lot of time to test out sets in the past few days, but I hope to find some time soon. If they aren't OU worthy they'll certainly be UU worthy, speaking of I can't wait until the OU tier finally settles so that UU fun can begin.
That being said while Cofagrigus is pretty great defensively, his complete lack of reliable recovery means he has serious problems with endurance. I'm beginning to suspect that the best set he can run is RestTalk, which brings me to another question: how viable is resttalk for stall? RestTalk obviously has some problems, such as being easy to set up on and the general uncertainty of what move you're going to pick, but these problems can be partially mitigated with smart use and good movepool, (ie: Scald and Roar) which can't prevent spikes/SR set up but can reduce your vulnerability to set up sweepers.
RestTalk does have some advantages though, recovering full health as opposed to 50% health can be very useful when you're at 25% or under, plus the ability to absorb status is a huge plus and means you won't have to expose your cleric as often as you otherwise have. Because of this I believe RestTalk might be viable in Gen VI.
To be a good RestTalker a pokemon should have enough bulk to withstand a hit or two inbetween rests, a movepool which allows it to put pressure on the opponent even while asleep, and probably a good phaze move. RestTalkers shouldn't have any other consistent healing option either, otherwise running RestTalk is kind of a dumb idea, with the sole exception of Marvel Scale abusers (ie: Milotic).
I'd say the list of viable RestTalkers is:o
-Suicune
-Cofagrigus
-Dragalge
-Milotic
-Snorlax? (Note: good synergy with Gourgeist)
Thoughts?