The Runes help with better bleed effects sustainability through Armor, and Magic Resist, without sacrificing to much in the way of Penetration as his passive does that for you. As for summoner spell choices, Heal helps your tanks and carry's more often than not as well as provide that "OMG I Tried to take Darius to soon." in the early game. My next choice is a no brainier that the. "OHH NO you don't, with exhaust." Provides. Finally the item build, I know its not traditional but it works give it a shot and see the difference in K/D.

That's all for my guides info, Thanks for giving it a run through.