What happens if I use Eastwatch-By-The-Sea to move power from a character (Beric for example) to my opponent's House card while he runs the Brotherhood Without Banners Agenda? Does the power get moved back to the character immediately? The Agenda says "When YOU claim or move…" Maybe I shouldn't put so much emphasis on this, but I'd like to ask, since it is not my opponent moving the power, but me, does the power stay on the House?

Thanks.

Thanos Voidseeker said:

The agenda is talking to its controller(your opponent). Therefore it's only when your opponent moves power to their house card when they must put it on a brotherhood character instead.

Eastwatch-by-the-Sea is an anti-Brotherhood tech as it moves power to the opponents house card. That moved power does not get moved back to a brotherhood character through the agenda.

I run up against a Martell Brotherhood deck in the Regionals and I admit I had not a single thing to use against Brotherhood in my Asshai Baratheon deck. After my defeat, I started thinking what I could use should I encounter Brotherhood again, and Eastwatch was the first that came in mind.

Thanks for the aid.