Well yeah, in the technical part is as someone said, the more "complete version of Drk" but that has been achieved through making it well… really close to the other tanks instead of deepening its own previous tool-kit.

For example about counter mechanics, well we have "dance partner" on Dancer right?, lets have "linked shadows" skill on Drk, if you are MT dont use it, now if you are OT you use it on the MT and what it does is that changes the target of the skill to the marked target.
Blood Price for example, gives back mp if you are hit, with linked shadows it changes the requirement from <self> to <t1> so if MT takes dmg you are still getting the effect, ofc dont use blood Price the moment a Pld or a Gbn decides to HG or Hiperbolide :>.