The magicly protected building?
An Asura lives in it and is part of the storyline if you pick Priory, it’s heavily secured and thus makes sense it has a shield.
That would be Maeva. (http://wiki.guildwars2.com/wiki/Maeva)
She’s part of the Durmand Priory storyline, and she’s constructed a magical defense system in her house (which appears to have activated). I was rather pleased with ANet for remembering about that.
Yeah, this was a neat inclusion. That and the territorial tengu rain of arrows were some solid inclusions.
nice, good thing to know =D
She also appears in a sylvari story arc.
It is a nice touch, too, I spotted it when collecting heirlooms for the achievement.