Arcoscephale Scry working?

[Endoperez]

It's more about the scrying and less about the accuracy. You'll see all provinces under your domain as if you had a scout in them. You won't get any more information even if you have three sources to the same information (a scout (1) in a neighbouring province (2) under your dominion (3)). You'd need a Spy (which Arcos can't recruit) or an Astral Window spell for a more accurate report.

[BigJMoney]

Well, it's good to know that spies give better reports; I did not know that / had forgotten.

=$=

[Folket]

I do not think spies give better reports on units. But you will see PD, unrest and tax.