How many times can you scry?

You start off with at least one green lead in each zone which you can keep scrying as much as you want. Blue and higher leads allow you to scry them only once per lead. Once you've scryed and excavated an antiquity with a blue or higher lead, you'll have to get another lead in order to scry it again.

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Then, where can i find scrying?

To find this quest, head to the Antiquities headquarters in Solitude. The quest isn't too challenging and serves more as a tutorial than a fully-fledged mission. Once it's complete, go to the journal and click on the scrying tab; this will show all leads they currently possess. What is a scrying mirror? A dark mirror, or scrying mirror, is one that's not fully reflective and which is used by clairvoyants for spirit contact. Mirrors are less expensive than crystal balls and we've got a good collection of them here.

Thereof, where are the scrying orbs neverwinter?

Areas With Scrying Stone Achievements Hall of Justice: south from the guild registrar at (1062, 924) Protector's Enclave: north from Sgt. Knox and up some stairs at (1071, 1284) Moonstone Mask: on the left side of the Moonstone Mask (follow the wall) at (-140, 707)