I've drastically changed this deck from a token/mill deck to a zombie token deck. No more milling in this deck. i really want this deck to improve in any way possible, so ANY criticism is more then welcome.
EDIT: The combo that I hope to achieve with this deck involves Grimgrin, Corpse-Born Mikaeus, the Unhallowed and a Gravecrawler . You sacrifice the gravecrawler to untap Grimgrin (and since Mikaeus is out, gravecrawler comes back with a +1/+1 counter), you attack with Grimgrin, sacrifice the gravecrawler again to untap Grimgrin after attack, then paying a swamp to get gravecrawler back. And by the end of the turn, Grimgrin sould have gotten 3 +1/+1 counters.
This is my first deck that I've made with an actual purpose, so be gentle.
Glimpse the Unthinkable if you want better mill.
Geralf's Messenger is one of the best zombies around, and Havengul Lich lets you play zombies that get killed off. Switch out the Dimir Aqueduct for Watery Grave and the Dimir Guildgate with Drowned Catacomb .
Thanks for the input, those lands are for cost reasons.