Thanks for all the comments on the v1 of the file. Here is the v3 (don’t ask).
I’ve gone through this with Stew at Mantic and they’re happy that this fits the models. I’ve also rechecked the costs and corrected a slight mistake I’d made the first time. Finally, most of the Cyphers have acquired a new trick:
The model can generate clouds of poisonous smoke to hide itself.
Once during a battle, at the start of any one of its Turns, the model may fill its cube with Toxic smoke. The effect is identical to a smoke grenade going off in the model’s cube with the added bonus of the smoke being Toxic. As long as a model remains in the smoke-filled cube it is treated as having the Vulnerable ability. Models that are immune to Toxic are immune to the Toxic effects of a Toxic Smokescreen. Adjacent cubes are not affected by this Toxic effect.
Placing a Toxic Smokescreen is not an action and may be done even if there are enemy models in the same cube.
If the model moves away, the Toxic Smokescreen remains in the cube it was deployed in. It disperses in the same way as a smoke grenade.