Primals are created by combining 10 motes of any one type together. The possible motes are as follows : Mote of Air, Mote of Earth, Mote of Fire, Mote of Life, Mote of Mana, Mote of Shadow, and Mote of Water. It is possible to "farm" these motes by camping out at the highest concentration and drop rate areas and killing the mobs continuously.

     Most people will still tell you that the elemental plateu in Nagrand is still the best place for Motes of all types. I don't agree with this statement and will staying far away from that assumption in this guide. Instead we will focus on mobs that don't require a flying mount (the elemental plateu requires a flying mount and many of you may be farming to get the money for that very mount), and also that have less HP and are easier to kill. The following is a list of the best "farming" spots for each type of mote :

(Netherstorm)
Mana Wraith 36.60 and 31.73 - 25.8%

(Nagrand)
Storming Wind-Ripper - 69.21 (Requires a flying mount)

(Shadowmoon Valley)
Enraged Air Spirits - 63.59

Mote of Fire

(Nagrand)
Raging Fire-Soul - 69.21

(Blade's Edge Mountains)
Vile Fire-Soul - 30.82

(Shadowmoon Valley)
Enraged Fire Spirit - 48,45

Mote of Water

(Terokkar Forest)
Crashing Wave-Spirit - 63.17

(Terokkar Forest)
Skettis Surger - 64,69

Mote of Earth

(Blade's Edge Mountains)
Sundered Rumbler - 31,61

(Netherstorm) Unstable Voidwraith -  64,41

(Nagrand) Voidspawn - 39,66

Source : Information obtained from % and Coordinates listed on www.wowhead.com .