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Hello, I'd like help with my Deck Build for the Innistrad Block.
With this deck, the idea is to mill the opponent by hitting them with my zombies when Undead Alchemist is out.
I'm not sure if it would be a good agro deck though...
Any ideas / suggestions to help me improve this Block Constructed deck?? 

The cards I've have planned are:

10 Islands
11 Swamps
2 Nephalia Drownyard
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23 lands

4 Mindshrieker
4 Black Cat
4 Highborn Ghoul
4 Undead Alchemist
4 Diregraf Captain
1 Evil Twin
1 Havengul Lich
1 Grimgrin, Corpse-Born
1 Mikaeus, the Unhallowed
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24 creatures

4 Dream Twist
4 Victim of Night
4 Trepanation Blade
2 Grimoire of the Dead
1 Army of the Damned
1  Zombie Apocalypse
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16 other spells