b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Hoix - Big Mouth [Exp.] TL [Type] Ref [In-joke] 
The game text is based on the scene where we find out (puzzlingly) that a blue liquid makes Hoix angrier, while a red liquid might destroy him. TARDIS Characters have a blue template design, while Allies have a red one.
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke