I saw someone ask about this in Gchat a few days ago. Just wanted to put it here for future reference.
[wowitem]Primal Might[/wowitem]
http://wowwiki.com/Primal_might
Made by an Alchemist (http://forum.twilightonalex.com/index.php?topic=506.0) from 1x of each:
[wowitem]Primal Mana[/wowitem]
[wowitem]Primal Fire[/wowitem]
[wowitem]Primal Earth[/wowitem]
[wowitem]Primal Water[/wowitem]
[wowitem]Primal Air[/wowitem]
'Course the only thing it DOESN'T need is a [wowitem]Primal Life[/wowitem]... of which I have plenty -_-
Primal Air - hardest one to get IMO...farm air elementals in nagrand or the elemental plateua
Primal Fire - Fire elementals in Blades Edge Mountains Ogri-la plateau have GREAT drop rates...and I have yet to see anyone competing with me for them
Primal Earth - talk to your nearest miner...they have a crapload of em
Primal Mana - the ghoulies in netherstorm get farmed a LOT, so I like to farm the aether rays on the blades edge mountain Ogri-la plateau...they have great drop rates too, but you have to compete with the people trying to lasso them...
Primal water - the water elementals in Skettish areas in terrokar are easy kills and high drop
just my two cents on how to farm that stuff
Elemental Plateu is a nightmare unless you're there off-hours. I'd also recommend SE or NE SMV for air elementals.
Shadowmoon Valley is a good place to go for primal's. Also Airplay can do primal might transmutes.