I decided to give this formation a shot due to wanting to find a use for my converted Praevian in
40k (he served as the Warpsmith tax) with two units of three oblits and a single mutilator. I was pleasantly surprised by the effectiveness of the formation with the +1 cover save working nicely for oblits camped at the back of the board. The lone mutilator
DS not only filled out the requirements it also gave something for my opponent that could wreck his tanks if left ignored while also not being important enough to waste firing the tanks at