Is this a good Zombie Deck? Rate Please. (MTG)?

that is a good start, but there are ways to improve the consistency and power of your deck. first, i would eliminate blue from your deck. the cards that you're getting from blue are not worth the instability that they create in your mana base. second, i would suggest adding Stillmoon Cavaliers as a powerful zombie. then take out Mind Rot and Megrim because they don't do much on their own. I would favor more Duress and Sign In Blood cards. That's just a start, it's really going to take a lot of playing before you find the perfect deck. Good luck!