Portals > Raven skills. You wasted really good talent picks at 4 and 7 with the raven skills. And at level 16 I would pick the healing shield, not 1/3 longer.

worst thing u could do is be in raven form there isnt enough champs that need this playstyle of roaming this game came out with pretty much no use of wards so people can pretty much determine already were the enemy is so sorry to say people who camp in raven form are by far the worst medivhs in game he is a supp/dmg hybrid

At level 7 I usually go for the Raven Familiar or the damagin Force of Will, I just don't like the Q and tend to not use it quite as often as I should. But Raven Familiar pays of his little damage (well more than another Q imho, the bonus in on all the people who travels the portals and not only their first time) while the damagin force of will is usefull when you have to shield an ally surrounded or chased by enemies.