Silly question, but the 2 d 6 S2 attacks the Basti gets in the shooting phase...are those poison attacks? Aren't those attacks from snakes coming out of the ark of Sotek, implying that they are poisonous attacks? However unless I missed it I don't see poison attacks in the stat line.
Due to the attacks automatically hitting, there is no chance to roll a 6 to hit (poison) so I guess there'd be no point in making it poisoned. Think of it as a S2 breath weapon you can use every turn with the extra benefit of hitting every enemy within D6".