..no I did not take an arrow to the knee but tried Frost DK thinking they are similar in concept and 'might' play the same ..
While I play both kind of the same in that range and kite pure melee (warrior / rogue / feral) face bash ranged (well fire mages are slightly different) ..
Retr is a great build fun wise, 8sec immunity, speed buffs, buff others all good .. thing is Retr is BOOM every 2min .. Now comes a Frost DK who is just BOOM non stop .. I mean keeps going and going ..