Dragonborn doesn't work w warlock
Huh? Why do you think that?
@Rain, the quote would have been pretty broken so I so skipped it.
*Hellfire Warlock (& eldritch claws) is for when you're not charging, plus hellfire gives retaliation when hit and a nice ranged alternative when needed.
*One hit KOs are nice, missing your opponent because they are under the effects of Blur isn't. Additional Attacks = always good. Likewise, the actual mechanical of combat have nothing to do with you're attacks per round, you think your Barbarian slashes with his sword once every six seconds? Fluff is fluff, mechanics is mechanics. Call it a single devastating hit if you like.
*I've never heard of the item. Dragon Mag has a Feat that allows Quickened Spells while Raged, other than that just Rage Mage. Maybe you can talk your DM into altering the requirements to be more Warlock friendly.
*Trident of Serenity (FR:RoF) costs a hair over 5,000gp, it totally and savelessly negates both Rage and Frenzy within 15ft of it. Hand it to a party member and the problem is beyond solved.
*On Monk/Barbarian, you know. There is no Monk/Barb multiclass Feat or option in WotC 3.5 is there? My bad. You'd need something like Chaotic Monk from Dragon Mag.
*Mantle of Rage grants 1/day Rage for 4k. Under Item Creation Guidelines, you could go with merging it with it's self or 22k buys 4/day. May not fly since those guidelines rarely hold up well so instead you might be better off with an alternative. Battlewine for instance gives +4 alchemical to Str/Con and -2 AC for one minute before it fatigues you.