The Calvins Twin's Champion Horse Fighting

With the release of Hour we finally got what we have all craved. A horse lord. And, since I like goofy themes, and I like the Comedy Bang! Bang! Podcast, I decided to put together a deck of horses punching each other.

http://tappedout.net/mtg-decks/the-calvins-twins-prize-horse-fighting/

Now, i know that by running null blue with Ravos and Tana I lose out on a couple blue horses. But I already have a 5 color deck, and want to avoid making another, plus had no plans for the null blue color combo.

For the most part this deck is finished, but it could still be improved. The deck is all about fighting horses. But it doesn't have to be just the fight mechanic. Unfortunately the only similar card that springs to mind is [[Ambuscade]]. So I'm looking for similarly flavored cards.

Cards that let my horses punch other creatures to their death.

And if you think of any other cards that match tje flavor, i'm all ears.