This quest is not available in game.
Bring Razorspine's Sword to "Swamp Eye" Jarl at Swamplight Manor.
I have cutting to do. I can't tell you what I'm going to cut, but... I need myself a blade. A certain blade...
Some people call it a sword. I call it a swing blade.
You help me? Those fish-men, you know, murlocs or whatever they're called.... There's one they call Razorspine, carries a big sword, lives north of here near the beach. That's the sword I need!
But don't sleep on this. What I'm cutting won't keep forever...