Wizards wouldn't be keen as it would eat into profits so it's not likely without a slight increase in pack price for what the resale value of the code would be
For all the times you do not want your vampires dead, a little Accursed Duneyard is great to remind your opponents about regeneration and how hard it is to kill vampires
There's very little of actual value in it, and it's widely lambasted by the playerbase
Making playable defensive cards has forced the designers to make the answers a little more flexible
So, you can just play this on curve if youre trying to finish your opponent off as quickly as possible, or you can disguise it, and end up paying 4 mana for a 3/2 that does 3 to your opponent which is a card youd probably play, and obviously its way better than that, both because you pay in installments and it makes your other face down creatures do the same thing
Next youve got Wurmcoil Engine