500 Pt escalation Campaign

[aprilmanha]

A pair of MoN Oblits in cover - especially with some cultists stood in front of them - have got a solid chance of crippling if not destroying one. Two may be a problem... High S weapon options (Lascannons, Melta) are pretty much pointless as Serpent Shield will just negate pens. Assault Cannons, on the other hand... 8 S6 Rending shots are glance-central - exactly what you want If needs be the Oblit Power Fists will be a solid chance to knock off a HP or two in desperation.
Another plan is DS the Oblits behind it, AC the living daylights out of rear armour then the Serpent/s need to turn around and expose rear armour to the rest of your army to shoot back or face getting melta/plasma'd next turn

Are you using the old Chaos codex?
I'm pretty sure Oblits can only use energy weapons in the current game so no multishot options.
Also pretty sure standing behind your own cultists only will give the eldar a free cover save while not giving you own Oblits any benefits?

DS'ing behind them and meltaing their rear armour is a good idea, probably the best chance for a 50/50 chance of a Pen result that may give a wrecked result!