i think necro is the best:
1. his staff aoe do not activate the moment you put them down so you can set "traps"to start i would go with the staff or the dagger. i like to set the # 5 spell which is fear behind me for 2 reasons if someone sneaks up on you they flee and if they get to close in front you step back and they flee. also the #2 spell you cast at your feet and use the #3 spell to start the first
2. he has a lot of healing spells from the get go.
3. by the time you can get minions is the time you need to get them so it does not seem to be op like the hunter.