The Night's Watch. Non-Loyal.
Event. Cost: 2.


Marshaling Action: Choose a character with printed cost X or lower. X is the number of Steward characters you control. Until the end of the round, take control of that character, and treat its printed text box as if it were blank (except for Traits).

A.M. Sartor
The Archmaester's Key #7.

Link: Decklists

"The Rat Cook"

What happens if, during the same round, the character goes back to the previous owner?

For example:

First player plays The Rat Cook and takes control of Sansa Stark (Core). Then the second player plays Ward on Sansa. Will she be blank until the end of the round anyways, or will she get back her text?

the player who controls the rat cook seems to be the only one considering the text blanked. — GetBackBaby 1
She will still be blanked. "Treat its printed text box as if it were blank" is a general instruction that applies to all players. — colonialbob 50