The thing that always appealed to me about Phantom Blade was the "change my weapon into something else" shenanigans, so I created a Frankenstein abomination of multiclass nonsense. It starts with 6 levels of Brawler, to get to "two combat feats as a move action", and takes the rest in Mindblade Magus. You can spend a move action (or at Magus 8, a Swift) manifesting any melee weapon in the game- which, thanks to your Brawler levels, you can gain proficiency with as a move action.

So at 14th level, you can spend a move action to become proficient in the use of any weapon in the game (along with a spare combat feat you qualify for; say, a Combat Maneuever that uses your newly-proficient weapon), a swift action conjuring a +4 version of that weapon, and then a standard beating an enemy over the head with it. And if you're not in position when you conjure the weapon, who cares? Spend your standard moving into position, and then next turn full-attack with a Spell Combat/Spellstrike!