I had a lot of fun with a CHR LOCK
Only weak point was pvp. If your enemies have spell resistance and acid immunity you are in trouble (as a blaster). Also your blasts go off at the end of the round which causes you to give up a lot of advantage in pvp. The UMD skill with lots of gold can fix that a bit though.
Your DC's wont be super high as you do not have as many feats to increase as say wizards. If you are focusing on crowd control then you will want to pump all you have into CHR.
Once you decide on a CHR LOCK- you need to decide if your going to focus on evocations or blasts.
Evocation Examples:Charm, Voracious Dispelling or Wall of Perilous Flame
Blast Examples: Brimstone Blast, Repelling Blast, Hindering Blast
If you focus on Evocations then you can use your epic feats to increase your CHR more.
If you focus on a CHR Blaster you can dump epic feats into blast damage or CHR.
I made a CHR blaster and used my epic feats for Blast damage, sacrificing maybe 3 DC for lots of juicy damage.
But I sort of felt that my builds DC which was on average 29ish was a bit low. I killed things so fast though that it did not matter much.
I think most folk go the blaster route.
I used a combination of:
Noxious Blast- fort save for a 10 round daze
Repelling Blast- reflex save for an AoE Knockdown.
And I used Vitrolic Blast to beat spell resistance.
At around level 28 I switched Noxious Blast with Hindering Blast which has a 2 round slow affect but uses a Will save instead of a Fort. I was not sure that it was a totally good idea to switch because the Hindering Blast being a lower level Evocation also had a lower Saving Throw. meh.
I am not sure what advice I can give you if you go the evocation route as I am not that familiar with the non blast offensive Evocations. I would say the majority of us go the Blaster route.
But it would be interesting to see a non blaster warlock - rocking the summons, changing into a devil, using walls of fire or tendrils, or Tenacious Plagues. Charming or Fearing you enemies...
...but it still might end up being a bit weak.
This is my list of must haves Blaster-Lock Evocations. I imagine other people have different lists:
Dark One's Own Luck, See the Unseen, Leaps and Bounds, Eldritch Spear
Flee the Scene, Walk Unseen, Eldritch Chain, Ignore the Pyre
Vitriolic Blast, Noxious Blast, Repelling Blast
Dark Foresight, Retribusive Invisibility, Dark Premonition, Eldritch Doom
Thats just a list though, not even mine really- I aquired if it from other peoples suggestions
One important take away here is that I have seen so many different and viable Warlocks on this game. There are so many creative ides. Dex locks- Con Lock- Melee locks. I saw a warlock archer- that slaughtered everything.
If you go CHR lock - think about dipping into Blackguard...unless you want to be one of those mamby pamby fey-locks, pffft! (just kidding- wuv woo, feylocks)
