You give Vincadi Modified Hero Token.Vincadi tells you, "Aerbax was amused by your participation in this experiment. It pleases Aerbax to award you a 'title' and this token of esteem."
Vincadi gives you Miniature Hollow Minion Chest."
Gives title of "Unwitting Participant" and was part of a live event on Jan. 8th, 2008.