Bloodstorm Tripper: What now?

[LanSlyde]

So, currently working on a Dwarf that combines TOB's Bloodstorm Blade and Deepstone Sentinel. My problem is I am currently stuck with my feat selection.

The build itself is Warblade5/BloodstormBlade5/Deepstone Sentinel5/Bloodstorm Blade +5.

My current feat selection:

(1) Combat Expertise: A requirement for later things.

(3) Point Blank Shot: For bloodstorm blade

(Warblade5) Ironheart Aura: For stormguard warrior

(6) Improved Trip: Because wielding a Guisarme.

(Bloodstorm Blade 3) Power Attack: a requirment for Deepstone sentinel.

(9) Stormguard Warrior: Combat rhythm has good synergy with Thunderous throw. As it lets me target touch AC to help negate those range penalties while building damage for when they enter my melee reach.

(12) Combat Reflexes: Because more AoO are nice.

(15) Knockdown: Because, ya know... tripper build.

(Bloodstorm Blade6) ???

(18)???

(Bloodstorm Blade9)???

So yeah, I have three feats available, any ideas?

[gorfnab]

(Bloodstorm Blade6) Mage Slayer

(18) Stand Still

(Bloodstorm Blade9) Pierce Magical Concealment or Robilar's Gambit

These two handbooks may have some other options:
Person Man's Guide to Melee Combos (http://www.giantitp.com/forums/showthread.php?127026-3-X-Person-Man-s-Guide-to-Melee-Combos)
Quick, Nobody Move: The Lockdown Handbook (http://www.minmaxboards.com/index.php?topic=13426)

[LanSlyde]

(Bloodstorm Blade6) Mage Slayer

(18) Stand Still

(Bloodstorm Blade9) Pierce Magical Concealment or Robilar's Gambit

These two handbooks may have some other options:
Person Man's Guide to Melee Combos (http://www.giantitp.com/forums/showthread.php?127026-3-X-Person-Man-s-Guide-to-Melee-Combos)
Quick, Nobody Move: The Lockdown Handbook (http://www.minmaxboards.com/index.php?topic=13426)

I thought about Mage Slayer and PMC, but this dwarf will be partying with a focused abjurer. Assuming he is doing his job I both feats should only really come into play if the wizard is down, and the wizard should only be down if no one else is doing their job right. So they might only be useful if we are already doomed.

Stand still is good, but Deepstones stone curse ability is an effective substitute. I thank you for the links however.