Here are the two most undesirable characters having existed for now three rounds.
Every character I traded for had to be given back.
Emerald Dust was given back because I couldn't secure the rights to Kashina and had to make Adolph sit out making no Pandaren be in Yesterday's Heavenly Bean Battle Samek (which was unfair because the setting was going to be the Pandaren Homeworld and I had no Pandarens to use for it.)
The first round of trades saw me getting a trade to available ratio of 4 to 5, which I had to give back the characters as I said I would.
