Seriously, what does this party need?

[Aazen]

I can't decide what to play. We have a Blackblade Magus, A Bloodrager, and a Synthesist/Ranger (trapper). Thoughts on rounding this out? Oracle or Cleric perhaps?

[EvilPaladin]

It needs an Paladin/Antipaladin Gestalt.

[Master of the Dark Triad]

A wizard might be nice. All dem utility spells and high level spells.

Maybe a caster druid would offer some interesting magic to the party.

Those would be some more oddball ideas, but a cleric/oracle would be best, probably.

[Kurthnaga]

I actually think a bard does a lot of what your party needs. If that's less your style, a full cl divine caster might be the next best alternative.

[Gauthok]

You have no full caster. Go with that.

[Raymond Lambert]

I think Kurthnaga hit it right on the head. Bard song helps the 3/4 magus and synthesist hit, keeps the blood eager hitting after power attack. Bards can cast a few cure spells themselves if someone really gets hit hard. I also like that a bard would make the whole team arcane. Witch could also get healing and stay in the arcane theme while getting 9th level spells thought the witch spell list Looks a bit weak to me.