WOW GOLD-Rogue/Mage/Priest

Rogue/Mage/Priest 3v3: Does not really get much better than the old fashioned RMP. Not much really to say about this other than the fact that nothing really hard counters it when played well and rogue/mage synergy has been golden ever since season 1 about World of Warcraft Gold.

Rogue/Mage 2v2: For much of the same reason above, this is one of the easier 2v2 comps to get high with as a mage, next easiest being mage/priest probably. The only debatable thing here is whether arcane or frost is better for this comp, and I personally feel that frost is better for 2dps whereas arcane is better for mage/priest about World of Warcraft Gold.

Prot-Holy Paladin/Death Knight 2v2: Can not really be much easier than this. Virtually un-oomable healer (and very hard to take down), combined with the peels, longevity, and damage of a death knight and you are basically a really difficult team to beat unless the other team has offensive dispels and knows how to use them well to get cheap wow gold.