Can you rate my mtg deck?

Depends on the version of mtg you're playing (1, 1.5, or 2), but it looks pretty good. Many of the beastly creatures cost a lot. And I mean a lot. You have 3 main weaknesses: anti-white (protection from color) and a different deck that gets many creatures out fast (vampires). Also, I think a control deck or black anti-creature deck would do you in. Many black spells have -2/-2 for creatures or cards like pestilence that deal damage to everything. Good luck though.