I need help; is this a good 200 point:

***Shaman x2
Heavy Stonethrower

I was thinking of using Maboc The Bully at 2nd Level with what is above, but is there a better 30 point guy I can use?

I'd try to fit in a body guard, maybe use ESAs? Then downgrade to LOST. HAven't done the math but I think you should have enough points to have 3 *ESAs and a decent charger.

If you want to play the OST in 200 points at the heavy version, you need some support.

First thing in your case I would dowgrade both Shamen to *.

You would then have 44 points to work with. A Horned Hatchetkrugg *** fits nicely (charge is an important ability when supporting things like the OST); besides, he's also a good attacker, not a mere bodyguard.

Anyway, downgrading the Titan to a LOST as drachedeeis mentioned would give you a lot more points to build your army.

For example:

LOST - 84 points
Shamen * x 2 - 42 points
Goblin Volunteer * x 1 - 5 points

Light Cavalier ** x 1 - 32 points
Light Cavalier *** x 1 - 37 points (or Centaur Lietenant ***)

Total - 200 points

i think that all titans are magic immunity. the shamans are useless if you use it with the HOST. use some charge or bound warriors.

The HOST doesn't have Magic Immunity, it has Battle Armor.

It's not only possible to enhance it, it's a great deal ;)