I would love to see an Undead Wizard (Grand Chasm in Dragonspyre) for sale at Zeke in Dragonspyre. I absolutely love those things. The way they are designed I mean, with the shredded robe and hood that gives them the grim reaper appearance.
It could be a lvl 45+ only pet, give an Undead Wizard card that does like 500+ to X (KI would have to decide on the damage limit, if one was put on) amount damage, and a pip as well. And it should be useable by all the wizards (once they hit lvl 45) on one's account. Not a no trade item.
Of course, as a last resort, it could be a death school quest item, but that would really be the pits, because I'd love to have one for all my wizards to use.
