I copied a vampire (found out it was vampire after I won) and then it became poly. Upon entering the acorn boss, it showed the back of the red deck as opposed to the Magic deck I was using.
bitter skiff
I copied a vampire (found out it was vampire after I won) and then it became poly. Upon entering the acorn boss, it showed the back of the red deck as opposed to the Magic deck I was using.
wide comet
known bug
fringe schooner
same as copied cards used to also have red backing, known issue