Above is my latest conversion idea for my Necrons, which I have called the "Ender Cannon, created from a Deathmarks Synaptic Disintegrator, Tomb Blade Particle Beamer and some plasticard.
My idea is to model 5 of these on spider legs and use them as count as Harbingers of Destruction.
The idea occurred to me when I saw a list with 5 of said Crypteks. The idea of having a faux artillery unit really appealed to me, so much that I deviated from my beloved Ultramarines. I hope you enjoy it, and hope it inspires similar conversions!