(I want a skull gear stick)
I like fast attack, but this has become thunder wolves and speeders instead of bikes and jump troops with my current space wolf usage. Blood claws and bikers, they are good, they hit just as well and have many more attacks, but I just don't like them getting punched so easily on the return swing. So my love of 12in movement has been lessened, but sometimes I just wish I could justify sky and swift claws. Though with how Jack's assault squad performed time and again, I just don't know how effective that is.
Alright here is the point of all of this. If I had lots and lots of money that I had to spend on gaming stuff, here is the list I would be running.
1850
HQ
180 Captain, bike, artificer armor, relic blade
290 Command squad, bikes, 1) powerfist, storm shield 2) storm shield 3) lightning claw 4) storm shield 5) apothecary
135 Librarian, bike, null zone, force dome
Troops
285 8 Bikes, 2 meltaguns, attack bike milti melta
285 8 Bikes, 2 meltaguns, attack bike milti melta
285 8 Bikes, 2 meltaguns, attack bike milti melta
195 5 bikes, 2 plasma, powerfist
195 5 bikes, 2 plasma, powerfist
That's 44 bikes, 37 scoring troops that can comprise 8 scoring units. A combat unit with storm shields and feel no pain, that sounds like fun, and a librarian to disrupt and protect. Making my thunder wolves re-roll those 3++ saves would make me very sad I know that for sure.

