Well, Necrons?
Its a mediocre army at the moment.
I'd rethink about it.
Even with three Monoliths and a Nightbringer such an army may not be competitive;
I battled such an army in the
GT final last year, with two objectives; thank you
GW for this scenario.
One Mono was immobilized, one rammed and destroyed, the Deceiver got killed by my Seer Council,
and his last Warrior squad hidden by the 3rd Mono was holding the objective.