b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Moves: The 1st Doctor [Exp.] LoT [Type] Ref [In-joke] 
The first "move" refers to the Doctor's gruff demeanor. The second refers to his missing entire episodes because of illness. The third refers to Hartnell's numerous fluffed lines (or "Billy fluffs").
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke