The full workup I (thistledown) am looking at for the Disabler. Really, it's two different builds on an ooze chassis. The second is the Disable Device specialist mentioned above. But that doesn't give me anything to do in a fight, and Pathfinder Delver can't start till level 6.
For the first build, I'm starting off with a Dirty Trick build, centering on the Turnabout Vigilante talent. If someone provokes from me with an attack or spell, I do a dirty trick. If successful, I pick the target instead.
Halfling with Fleet of Foot, Skulker, & Underfoot. Maybe Polyglot
Traits: Kobold's Neighbor (trap bonus) and Intrepid Volunteer (Agile Maneuver for only Dirty Trick)
1. Shifter - let's get rolling. Dirty Fighting
2. Vigilante - Avenger
3. Vigilante - Turnabout talent. Improved Dirty Trick.
4. Mesmerist (Enigma) - swift stare: get concealment from target. 2nd round it becomes invisibility. And Astounding Avoidance trick.
5. Oracle (Seeker) - Spellscar mystery for Eldritch Resistance (resist all elements 2). Tool Optimizer.
6. Pathfinder Delver - Fast disable, bardic knowledge
7. Pathfinder Delver - Trap Sense, no difficult terrain. Combat Reflexes or Step Up
8. Pathfinder Delver - Thrilling Escape
9. Pathfinder Delver - Don't need tools. Greater Dirty Trick. Retrain Tool Optimizer to Combat Reflexes or Step Up.
10. ?
11. ? Deft Hands. Even if I don't have hands.
Granted, that's 3 classes that don't grant BAB at first level, so by level 9 I'm still only BAB 6, but hopefully it's enough.
As to gear, it's 11 Ioun stones and a few other things. Most of the other things affect the 'bearer', so they should be fine to have knocking about inside the ooze.
