b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Babel Masters [Exp.] RD1 [Type] EE [In-joke] 
In the upper left-hand corner, the word "Cavendish" appears. This is a reference to a region in the Canadian Maritimes, where the author hails from (the Maritimes, not Cavendish).
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke