Originally Posted by
Stormcall
Reaver feels absolutely nothing like a frost DK. For Frost, it's all about burst, big hits(like Obliterate or Frost Strike), the diseases are a fairly small portion of your overall damage and mobs will generally be dead long before your dots expire. For reaver, the diseases are a huge part of your damage, and you don't have anything that hits especially hard like an Obliterate would. Reaver is closer to a petless unholy DK than a frost DK.
For Frost DK comparison, I would look into the cleric's shaman tree. You have a mix of physical damage and armor ignoring water/air damage(like how frost dks had physical autoattacks and frost based howling blast and frost strike), Massive Blow hits pretty hard, as does their execute(Glacial Strike). Plus you have an ability on a 1 minute CD that gives you 10 stacks of Rage of the North, giving you 10% increased crit chance per stack, with each crit consuming 1 stack.