Hello!
So, I know that if Meera Reed blanks a non-character-attached attachment, it falls off, as attachments have to be attached to characters and the only rule making it possible is the "Attach to a location you control" line that, for example, Pyromancer's Cache has.
BUT, what happens if you blank a Khal's Drogo Tent?
The East You may choose to play Khal Drogo's Tent as an attachment on your House card.
Here, you've already played the card, and my guess is that it's not continuosly checking wether it should be attached or not. (It does not have a line stating "Attach to your House Card" that can be blanked, but it seems like it allowed you to play the card as an attachment. Will blanking it make it fall off? If the rule to blank it blanks the text that has already been set up (as it can't blank the He calls it thinking in play), it should also make it become a Location, right?
Thanks in advance!