How often does the Swarm succeed in getting people killed, I wonder? The Orcs all seem low strength. :S
It's VERY successful. I play a deck very close to this, and it's insane.
Goblin Hordes (if you have them all out) gives you four extra minions each turn. Grab a couple Scurrying Goblins or
Denizen of Moria and you're all set to go. Not to mention that chances are you'll draw a couple Persistent Orcs guaranteed as well.
Lego, just a few thoughts. I find
Orkish Worker extremely good in this deck: good cost, good strength, and you'll often at least get two of the twilight back. I would also try to add some
Spurred to Battle - they're very effective I find. They often save me when I need just ONE more minion out.
Other than that, the deck looks great. WotR Block Freep sides are always tough to build.