b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Cassandra - The Last Human [Exp.] 9D [Type] Ref [In-joke] 
The author couldn't quite give her Charisma, but let her have History despite the many distortions she uttered on the show, which is where her special ability came from.
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke