Help with Pixie Warlock Gestalt!

[Zebu]

Howdy!  I'm joining a new game, and the GM has announced incredibly powerful character generation rules.  This is because a) the game will be hard and b) we will see little if any magic treasure.  He's asked for a "solid level" of optimization.
The rules give very good stats (5d6 progressive).  They also offer a kind of LA-forgiveness (points of LA convert into a penalty to starting XP and are never heard of again).  Additionally, if we want we can remove any number of racial hit dice (losing the feats/skills/hp/etc in the process) from our chosen race.  The setting is one where weird and monstrous races are very, very common.  We're also using the Unearthed Arcan gestalt rules.
Starting level is 7th; my character will start at 6th level thanks to the Pixie LA.

My character concept is a Pixie who uses Permanent Image and an item of use-activated Dancing Lights to masquerade as a human warmage/monk with very unusual spells (it'll be interesting to see when the party figures it out).  For class I'm thinking of something like Illusionist/Mindbender//Warlock with a Flyby Attack build.  One of the signature moves is to hit someone with the Charm invocation, then direct them with telepathy ("The voices in my head say you're a traitor...die!").  But I'm worried that the current setup really isn't powerful to take care of itself in a hostile world.  I've thought about using Psionics isntead of Arcane to create the illusion (since psionic powers don't require you to start chanting whenever you use them), but I don't know the first thing about building a psionic illusionist.  So if you have advice for a way to make the two classes synergize better, or a different set of classes that would still allow for plenty of Illusion goodness, I'd appreciate the help!
Additionally, if there is some monstrous race that can really take advantage of the ability to drop racial hit dice, let me know.  I might not use it, but there are other players in the game still trying to pick a race.

Two special concerns:
1. I need a way to keep people from saving against the illusion all the time and realizing that the human doesn't exist.  High DCs  probably aren't enough, since we'll be meeting 15th-level NPCs and the like.
2. I need a counter to blindsight, which completely unmasks this build.  I know about Darkstalker, but that requires the pixie to actively hide, which I think would make combat difficult.

[CrimsonDeath]

First off, Mindbender is basically a one-level class.  Aside from Telepathy 100' and a good Fort save, pure Wizard does everything it can do better.  Yes, even keeping someone Charmed/Dominated indefinitely (just politely ask your friend/order your thrall to accept a "beneficial" spell you're about to cast).  Five more caster levels grants lots of additional spells and spell slots.  And really, if you're grabbing Charm on the Warlock side, you don't even need spell slots to Charm someone in the first place, so the only Eternal Thrall that matters is the one from Dominate, and that lasts days/level anyway.  (If you really want to, you can take more levels than that, but you should know you'll be intentionally creating a weaker character.)

The only psionic "illusion" powers to speak of are False Sensory Input (Telepath 3), Cloud Mind (Psion/Wilder 2), and Mass Cloud Mind (Psion/Wilder 6).  Cloud Mind makes you undetectable to one creature, and the Mass version hits one per level-- for a Pixie, the only use would be hitting people with See Invisibility.  False Sensory Input targets a single creature (plus one more for a 2PP augment) and can only alter sensations, not create or remove them.  It has lots of potential uses, but I don't think what you want is one of them.

Many illusions require that a person "interact" with them before getting a save, and concentrating on many illusions causes them to react appropriately (flinching when attacked, for instance).  Oddly for a spell, good roleplaying should make them a lot more effective-- it's just the character that's doing the roleplaying rather than the player.  You might also consider the Master Specialist PrC.  You can enter by level 4 with no cheese.  It grants Greater Spell Focus at 3rd, and the Minor School Esoterica for Illusionists (gained at level 4) gives another +2 to the DC on Will (disbelief) saves against your Illusions.

Do you expect Blindsight to be a big problem?  It's true that they'll be able to penetrate your illusions, but how much will they care if a Pixie wants to play Human?  How often will you have to deal with creatures that have Blindsight?  How often do you expect to deal with them peacefully?  As a Wizard//Warlock, I wouldn't be surprised if you had good social skills, so if you use Diplomacy to get them to Friendly, they'll probably keep your secret for you.

[Zebu]

Yes, just the one level of Mindbender.  But that one level is a big help, since the telepathy gives me a way to talk subtly when not concentrating on the Image.  Plus it allows Mindsight, which seems absolutely awesome.

Ouch, really?  I'm just now learning the Psionic material.  I hadn't realized that their illusions were that limited...  Is there a Psionic PrC or something that can use other illusions?
Alternatively, is there a good way to cast arcane/divine spells while masking/avoiding the verbal components?  Applying Silent Spell to everything seems like it'd be crippling, but it's hard to pretend to be a human when all of your spells are accompanied by a high-pitched voice that comes from your ankle.

Master Specialist looks like it'd be a big help, thanks.

Welll...  Blindsight is mainly a problem for roleplaying reasons.  The pixie wants to earn great honor and recognition for the illusory human, and I doubt even a Helpful king would knight someone he knew didn't exist (especially since the current monarch is Lawful).  So all it takes is one person with a Blindfold of True Darkness to convert an epic deception into a little prank.  Which would be intolerable.  But yes, the character will have good social skills, so asking people nicely might work in some situations.

[DrPhro]

Shadowcraft mages get silent and still spell on all of their illusions, but if that's what you enter it for you weren't paying attention to the class. The only problem is that you have to be a gnome (which is only a problem because it's not a pixie). But their illusions can be more real than life (literally). There's also an alternate class feature for wizard that makes it so that even if one person realizes it's an illusion it doesn't help others with their check.

There are some anthropomorphic races that have 0 la and some HD

[kremti]

Shadowcraft mages get silent and still spell on all of their illusions, but if that's what you enter it for you weren't paying attention to the class. The only problem is that you have to be a gnome (which is only a problem because it's not a pixie).

Alternatively squeeze in Stoneblessed somehow...

-K

[Zebu]

I can probably get into Shadowcraft Mage as a Cabal member instead of a gnome.  Assuming that works, I still really need to start the game with the level 2 ability (as a 6th level character), which is difficult since it requires a 4th level shadow spell.  After browsing the forum, I found the following trick to start on Shadowcraft Mage at level 2:

Be an arcane caster.  As your first-level feat, take Spell focus:Illusion.  With two flaws, take Metamagic School Focus:Illusion and Heighten Spell.  Then Heighten Net of Shadows to 4th level using MSF:I. 

Does that work?


Also, where does it say shadowcraft mages get Still Spell?  I see Silent Spell at level 2, but...

[Stormcrow]

well you could go with your warlock as planed for they are good for a pixie but also i would recommend looking into the Trixie build they are very good support build take a look

http://community.wizards.com/go/thread/view/75882/19867902/Trixie_the_Party_Booster

[DrPhro]

You're right I can't remember how/where still spell comes from  . It might be a racial substitution lvl (sorry!). I'm also starting to realize how much that class likes gnomes. I used the earth spell feat to get in early.
I don't know any sure fire ways to prevent everyone from seeing through the illusion but they only get a save while interacting with the illusion and I know that you can pump up the dcs pretty high. As for keeping your identity a secret you could always just use alter self until your illusions are strong enough, you also could easily pass yourself off as an evoker or conjuror.
I'm also sorry if I spun you off in a completely different direction than you're original build.