Every distinct wording since 2010, newest first.
June 19, 2026 · Marvel Super Heroes
A face-up merged permanent that contains a double-faced component can’t be turned face down. If a spell or ability tries to turn a face-up merged permanent that contains a double-faced component face down, nothing happens and that effect doesn’t change any of its characteristics or their copiable values.
April 17, 2026 · Secrets of Strixhaven
A face-up merged permanent that contains a double-faced component can’t be turned face down.