RUMBLETiGER
Adventurer
Tell us Character level please.
Human
1st Mage Slayer
Human Exotic Weapon: Spiked Chain
3rd Standstill
5th Blind Fighting
6th Pierce Magical Concealment
8th Combat Reflexes
9th Martial Study: Crusader Strike (or similar)
12th Martial Stance: Thicket of Blades
15th Robilar's Gambit
18th Defensive Sweep
I left out a couple of Warblade bonus feats in there, but most of the options left are kinda crappy. Grab Imp Intiative with one of them and you should be fine.
At low levels, you have great AoO capabilities with your 10' reach. Mage Slayer keeps foes from casting defensively while they are near you without getting smacked, and Standstill keeps them from walking away. By the level where Mirror Image starts becoming a PitA, you have Pierce Magical Concealment, which foils that, Blinking, Displacement, etc. If the mage was smart and picked up ranks in Tumble, you'll have Thicket of Blades by the time he can reliably make the DC15 check crossclass.
Manuevers, don't really matter THAT much, but I'd keep Moment of Perfect Mind and Wall of Blades prepped at all times. That shores up your weak will save and defends your Touch AC against incoming orbs and rays. Recover maneuvers as soon as possible after using either.
Its not perfect, but it gets the job done. If you want, a dip in Crusader would help you at mid levels to get Thicket, but causes you to miss out on your capstone at 20. While strong, it also has no way to personally deal with things like Fly or Contingency without investing in magical gear. Regardless of build, you still don't have a way of dealing with Astral Projection, but thats something you'll just have to live with given that you AREN'T a caster and HE is.
Well you could take a level one swordsage dip declare shadowhand as chosen discipline netting you the requirements for Exotic weapon master. There you could take two levels and still get the final bonus feat for Warblade. I would take uncanny blow and Exotic reach to enhance your stand still capability. Uncanny Blow, I think as you know bumps up your str. damage to double your mod., however exotic reach allows you to make attacks of opportunity even past cover. You will lose the ability to do dual stance, but that is a level 20 ability.Hey, that's a lot of help! Is there any PrC that could help imrpove the build? Mage Slayer will have to wait, I don't meet Prerequisites at first.