Romans: Eye of Cathrac missing?

[Ruslan]

I'm at the end of the game on a Roman playthrough, trying to destroy the Nethergate while Sylak and his henchmen are shooting me down. I was stuck on this for a couple of hours, so I decided to look up what I was supposed to, and apparently you have to steal the Eye of Cathrac from one of the pedestals in order to disrupt the gate. The problem I am currently having is that there are three pedestrals:

• the western one has the Skull of Stone
• the northern one has the Crown of Lost Warriors
• the eastern one has a second Crown of Lost Warriors

 

I've looked around every square inch of the map and I can't find the Eye, nor am I able to defeat Sylak. Does anyone know where it is? Is it supposed to be one of these three platforms?

[Randomizer]

I remember it was on one of the pedestals and then rolls off so you have to chase it down during combat.

 

Sylak is one of those foes you can't defeat in combat.