User blog comment:Khaladar/Twinstaff of Magnus/@comment-58.172.168.153-20120603023303/@comment-94.215.55.161-20120604082052

But what's the use of spell vamp if you have no damage?

To compare: 2 AP is worth 1 AD in price. So to equalize to AD, you would have 38 AD. That's not something to rush.