When you claim power or move power to your House, you may place it on any card with the “Infamy” keyword instead of placing it on your House.
Is there any reason why one couldn't use Infamy to negate the effect of Eastwatch-by-the-Sea?
Edit: Nevermind, I think I found the answer in another thread. Infamy only works when the player himself is moving the power, not when an opponent moves their power. New related question: Could I use Eastwatch to move power from one of my Infamy characters to another of my Infamy cards?