Moar Necron Sillyness. the Deathstar unit!

Ohhh boy, this one's expensive... but what doesn't it kill?

Overlord 90
with Orb, Scythe, Scarabs, Weave, Phase Shifter = 205
Royal Court
5xLords with Scythe, Scarabs, Weave, Phase Shifter = 120 x 5 = 600
1xCryptek of Eternity with Chronometron = 40 (for the re-rollz)
Unit Total of 845 points of super killy killyness.

You can also take a Ghost Ark with a warrior squad, kick out the warriors, and load up this unit. mmmm tasty.

2+/3++/4+ RP unit with S7 Power Weapons and each dude (except the cryptek) having Mindshackle Scarabs (small termy units would mostly be hitting themselves)

But Sir....you forgot the following dudes...

Destruction Cryptek with Gaze of Flame to provide Assualt (I think) and Defensive Grenades to the unit
Harbinger of the Storm with Lightning Field to provide d6 S8 AP 5 hits to anyone charging the unit.
Cryptek with Veil of Shadows so that they can deep strike at will....

LOL!!!

Toss Obyron in there for extra warscythe killyness and the ability to zap out of combat!

Opponent: "So uhh... you've got two troops back there and that unit?"
Necron Player: "Yep!"
Opponent: "Alright then."