Discord’s first appearance (him using pony-marionettes) is very similar to the Devil card.

I always felt that Death represented Chrissy best. Why? Because these are its representations:
 
Upright: Endings, beginnings, change, transformation, transition  
Reversed: Resistance to change, unable to move on
 
As for Discord, the Devil card would represent him well, but maybe not for reasons most of you are thinking. The card’s representation (as a lot of you may know) is about addictions and over-indulgence, and how such a thing can “enslave” you. However, in reverse, the card can also serve as advice, that sometimes its actually healthy to be “wild” and just have a little fun, lest you imprisson yourself in more or less an opposite but equal way. Its that message that really makes me think of Discord.

Pretty nice, though I would have gone for Discord. They’re both manipulative, but he fits the theme a bit better, and looks more like the original card anyway (with Discorded ponies chained up, no doubt). Sadly, I’m not an artist, so I’ll just note that it’s well done.