User blog comment:StrategicMagic/Spirit Stone - Viable in Lane/@comment-4652200-20130427111906

Also viable on Vladimir but you start with and then  ->.

And you take because it works with spellvamp -  gives you spellvamp and reduces the cooldown.

Also combined with, and  you get about 51% spellvamp which makes  heal you for ~30% more than  and with 5 times shorter cooldown.