As Tim2051 noted a few posts up, there are some things that really are painful so far. Its hard to get places with odd zone geometry (!@#%# waterfalls), falls sending you to Freeport, and just enough mobs that see through double invis to make it just about impossible to get anywhere without needing to stop and fight.
I seriously feel like they put all these blocking roots all around on purpose!

The mask isn't a drop. Its acquired through and progressed via a quest chain.
The quest list for it is here: https://sor.eqresource.com/maskofthevortex.php

