Welcome to Librarium Online!
Right heres my 1000 point list vs alcomers in upcoming club comp, we normally play 1500 so have struggle on where to cut back but here we go - all thought good or bad welcome!!
1 x Necron Lord, Destroyer Body, Warsythe - 140
3 x 10 Necron Warriors - 540
3 x Destroyers - 150
7 x Scarab Swarms, Diruption fields - 112
1 x Tomb Spider - 55
I like it. Pretty well rounded, and you have enough necrons to keep you from phasing out.
I give it a thumbs up as well. The only thing I want to comment on is pairing the Lord with the scarabs. As far as I know the majority toughness rule comes into play but I guess you can allocate wounds to the scarabs anyway. At any rate I wish ya luck.