The Shadow "knows"

[Crystalion]

+3 shadows rare would be a neat trick ;)

Yes, I wasn't thinking about +3 tree not being allowed on rares.

The irony here is that for claws the +3 skill tree are readily shoppable at Anya (I just picked up several in under half an hour in fact).

Fire Blast is too low to get on a claw with +3 tree (though I don't know if any cubing finesse can overcome that), but Shadow Master/Warrior and many of the good specific trap skills ought to be shoppable with a lot of patience, looking for +3 tree/+3 skill.

For the traps one could be super-duper patient and also insist on the +3 traps/+3 trap_specific claw being a greater or runic talon of quickness so you could then double socket with Shaels... but I have no idea where the attack breakpoints are for Fire Blast and trap setting or even whether, as reported, FB uses IAS rather than FCR.

As uncommon as this is, I'm pretty sure it is more attainable than the "Holy Grails" for some other classes. And +12 to your fav skill from just your left/right hand is pretty studly (er, pardon me, Miss 'sin, I meant: studettely ;) ).

I guess i have to make a slave-grenadier

That's easy, just be sure to take off your clothes before casting her, and she'll get that kinky black leather look. :D