Non-Detection spell and Gurke's cloak

[Lemernis]

I'm trying to playtest the Non-Detection spell and Gurke's cloak against an Iron Throne mage, Alai, and it's a little unclear to me if they work against enemy mages who cast Detect Invisibility, which Alai does. It looks they work most of the time, if not every time. Nice to see that Gurke's cloak finally found a use.