Originally Posted by
Damerflinn
What Lyro said is probably true. He's either not using Vampiric Touch enough, or it is getting removed too much.
If he's not using it enough, then that's simple enough to fix. However, there isn't really much he can do about it getting taken off too much.
I'm not sure how Spriest Shaman would work out for 2's, doesn't seem like there would be enough burst to really take anyone down?
Another possibility is that he's not getting anything out of Spirit Link Totem when it's being used, which would affect him late game. It honestly shouldn't be that hard for him to return his mana. With VT, Hymn, and Fiend, it doesn't surprise me that most Priests are able to sit at about 70%. Is he using Mindbender? That could definitely help as it has a shorter CD. Hymn can be a bit difficult to get a full channel off, but if coordinated properly shouldn't be too bad.