I forgot about the Artizan of K. That would be very good. Nice idea thank you. I Will also have a look at Animate Dead.
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Ah, yes, I suppose it does cost more. (Just went and checked). Also, didn't think about the dealing damage to plansewalkers instead. Also, Maybe something you could would be Shrieking Affliction. That seems fairly cheap, but not sure how many cards this deck would usually be able to keep the opponents hand size down to, not having played it. Sorry.
Maybe use Liliana's Caress instead of Megrim. Is one cheaper and does exactly the same thing.