I really like the idea of this card, however I would question why you chose Brown (aside from it being brown in a previous printing) does Brown represent him better, because I would think Gray might be a better choice (maybe gold because it might signify wealth) since grey signifies being lukewarm, The Rich Young Ruler isn't ever seen as evil, he wanted eternal life, he questioned Jesus, and Jesus told him what to do and we don't know whether or not he did it (the text isn't clear, this actually makes him becoming a lost soul very accurate (he could have gone either way)), I would suggest he came to Jesus as someone who is best described at Lukewarm which means Gray in redemption. The second reason why I would suggest grey is because with his hand discarding option he fits with Grey's hand discarding abilities.
Otherwise I really like this idea, good job.