(Dwarven Mortar) 3d6, 100 ft., 50 ft. min. (if aimed at less than 50 ft. has a -5 penalty to attacks)
And have various spreading ammunition, exploding ammunition, etc... (And more, of your design... Net Shooter, Caltrop Spreader...)
Mortar Master
Mortar Kombat!
Skills: 4 + Int
Level BAB Fort Ref Will Special
Lvl 1 1 2 2 0 Exotic Weapon Proficiency, Rapid Reload
Lvl 2 2 3 3 0 Blast Radius
Lvl 3 3 3 3 1 Mortar Precision, Far Shot
Lvl 4 4 4 4 1 Weapon Focus
Lvl 5 5 4 4 1 MultiShot, Precise Shot
Lvl 6 6/1 5 5 2
Lvl 7 7 /2 5 5 2 Greater Blast Radius
Lvl 8 8/3 6 6 2
Lvl 9 9/4 6 6 3 Ammo Specialization
Lvl 10 10/5 7 7 3 Rapid Shot
Lvl 11 11/6/1 7 7 3
Lvl 12 12/7/2 8 8 4 Weapon Specialization
Lvl 13 13/8/3 8 8 4
Lvl 14 14/9/4 9 9 4 Greater Weapon Focus
Lvl 15 15/10/5 9 9 5
Lvl 16 16/11/6/1 10 10 5 Improved Multishot
Lvl 17 17/12/7/2 10 10 5
Lvl 18 18/13/8/3 11 11 6 Bombard
Lvl 19 19/14/9/4 11 11 6
Lvl 20 20/15/10/5 12 12 6 Greater weapon specialization
Blast Radius (Affects 10 ft square)
Greater Blast Radius: (Affects 15 ft square)
Mortar Precision (No -5 for aiming within 50 ft, and bonus Far Shot)
MultiShot- Mortar Master may fire two shells of the same type in a single shot. He may choose to fire two shells of different types for a -2 on the attack roll.
Improved MultiShot: Mortar Master May fire three shells of the same type in a single shot, He may choose to fire any combination of three shells of different types for a -4 on the attack roll.
Bombard: Mortar Master may fire a series of shells as a distraction upon any number of creatures, for every 2 shells fired, only one does the normal damage of 3d5. {Maximum 4. Must wait 3 rounds to cool, or risk destroying the weapon. For every round fired after the maximum four, another 2 rounds must be added to the cool down] upon a single target, forcing the target to take cover or make a Ref save [DC= Level of Mortar Master+ Dex Bonus If any+Rounds fired], if the target is pinned in this way, it receives no dexterity bonus to AC, and takes a -2 on Ref Saves. Last for 1 round for every shell fired.
Ammo Specialization: Any Craft (Ammunition) checks have +4 enhancement bonus.
So thats a very quickly put together rough draft idea. Eh, Im not the most talented when it comes to making Classes from scratch so deal with me here. the DC for Bombard...It didnt..seem right? xD that sounds weird, but Im sure someone else will be able to spot my errors.
WEll, yep, there it is, phase 1 of the mortar master.