Hey and welcome to my build for Magewick. When you play Magewick you can Jungle or beeing on a lane. if you want to jungle you switch out ignite against smite and specc smite instead of deadline on the offense tree. I see laning is the best option for magewick.

here is a picture while i play this morning.
I see the picture wont show up so here is a link
http://tinypic.com/r/23kylp3/7

As you already know Ability power goes for the spell Hungering Strike. use this spell as often you can to harras other enemies it have nothing to say if you get a spell against you since you will get health back from the hungering strike.

While playing Magewick in grp fights you got to think whats best for your group since your ulti does not take any dammage at all while you go Ability power. I prefer you use your ulti for stop others ulti or stop them from running away from a ulti or the fight.

You start your magewick with a Doran's ring this will make you spam your Q ability alot. when you have arround 1000 gold you recall and you can decide to buy Blasting wand or Tear of the godness. I prefer having the blasting wand because I Never had a problem with mana.
After boots and Archangel staff I buy mejai if i have a good start if not i go for Rabaodon's Deathcap. As replacement for Mejai i would have choosen Hourglass for the stasis(2sec where you dont take dmg)
At the end when i have got alot of Ability power I choose to have lichbane because after magewick's Hungering strike he almost have no dmg. With lichbane you double Magewicks and this is just epic win!

IF you decide to have magewick in junglemode you should buy Cloth armor and 5 healing potion. You should switch your Ignite to a Smite and specc 1 point on smite instead of deadlines in your offensive tree. you may upgrade your cloth armor to a madreds for faster jungling, but i prefer getting your AP up quickly.

+ nice team support
+ Funny to play with.
+ people always think he suck and you can take advantage of that
+ Really good to chase people with
- Hes dead if he gets targeted in group fights

I have choosen the masteries for getting lowest cooldown reduction you can get. Also you should always get mana golem and elixir of brilliance for cooldown reduction since Magewick is nothing without Q.