"Hey Kirby
Everyone agrees that the Scarabs and Spyders are a great buy for the points but very few have tried to build an army around them.
Here is my attempt
Nemisor Zahndrekh
Vangard Obyron
Over Lord, Scyth, Mind Shackle scarabs
5 Harbringers of distruction, 1 w solar flare
5 Harbringers of distruction, 1 w solar flare
5 Warriors
5 Warriors
5 Warriors
5 Warriors
5 Warriors
3 Canoptek Spyders, 1 Gloom Prism, 1 Fabricator Arm
3 Canoptek Spyders, 1 Gloom Prism, 1 Fabricator Arm
3 Canoptek Spyders, 1 Gloom Prism, 1 Fabricator Arm
7 Scarab Swarms
7 Scarab Swarms
6 Scarab Swarms
2000pts
Night fight to close with enemy (obviously).
effecively 35 scoring bodies,(2 harbingers in each warrior unit), 1 with res orb (from Zahndrekh)
+9 scarabs per turn from spyders.
Tons and tons of tactical options with Obyrons Viel and Zahndrekh.
For example join Obyron and Overlord to a spyder unit for Tporting/Assaulting fun times."
The concept is cute and that's about it I think. You have no real punching power either at range or in combat. 9 MCs are pretty rocking but like Kanz, they tremble at anything capable of putting out lots of mass high strength/ignore armor attacks. They are still I2 as well - certainly a great buy but not something to bank on. Scarabs are easy to beat in combat and force fearless saves. Warriors without Ghost Arks or in larger numbers are pretty easy to shoot off the board. And you're spending a lot of points on HQs. Crypteks are good :).
I think the concept of Spyders + Scarabs is fine but I don't think making a full army list around it is going to work. I'd rather see you drop the Overlord and maybe trim the Spyders down to 2x each. This gives you lots of points to play with and can allow you to make bigger Immortal squads. This now gives you some much more durable units who also bring a lot more firepower to the table. I'm not sure about having Obyron and Zahn in there and would prefer just Zahn, but then I haven't tested Obyron much. If you do drop him, you have points to make a sort of hybrid list with Command Barges/Night Scythes (or Ghost Arks and keep the Warriors), etc.
Also, be wary of only running Scarabs in your Fast Attack. Without anything like Wraiths they are unlikely to ever escape combat alone. All in all I think the concept of Scarabs + Spyders is fine but I don't think basing your entire list on it is a good idea. You don't have the firepower to shoot down bubble-wraps before the Scarabs get there and you don't have the CC ability to quickly remove bubble-wraps. Your opponent is then free to put bubble-wraps out without fear of said unit being shot off the board. If you mix in other units around this concept though, your opponent has to worry about Scarabs getting in amongst their lines as well as what the rest of your army can do (i.e. shoot, shoot and shoot some more).
