Don't bother with the rings, I don't think they are competitive at all. Rancor however will be your best friend. Remove the curses for the Rancor's and maybe even the Bloodthrone Vampire s.

As for the Demonlord of Ashmouth 's, I would remove the two Pyreheart Wolf 's.

Hey I really like this deck, and it gave me some solid ideas for mine even though we both went in complete different directions . If you want to chek it out its called "counter-nation" but anyway +1 from me . And slumbering dragon is hilarious with increasing savagery or slitherhead and corpsejack menace.

Someone already mentioned this, but Bloodflow Connoisseur is much superior to Bloodthrone Vampire . It has the same sac ability, but it gives counters instead, which works with your theme.