b997eee8_CCG___What_s_That_Inside_Joke___In_joke
[Card] Rani Chandra - Bridesmaid [Exp.] S10 [Type] Ref [In-joke] 
Though she technically didn't meet everyone she gives a bonus to, they were all brides on the series.
Unauthorized Dr. Who CCG - What's That Inside Joke?
In-joke