Yes, Yap the Pixie and he is black border
Well, this what I know, I was playing quest on easy with 3 party group, Merisiel, Kyra and Valeros
Valeros was at The Rusty Dragon
What I believe could have happen:
Both, Merisiel and Valeros have high charisma and charisma base item. I think I didn't miss or rejected any ally I got.
I may have mill through The Rusty Dragon deck just by gather allies
The card may be specific to the The Rusty Dragon