I have found A way to regain your mana very fast while in combat...
First off you will need, [Lesser Planar Essence]x7 In one stack, Another [Lesser Planar Essence]x5 in a stack, and [Greater Planar Essence]x4 in a stack. Having thies 3 separate stacks will make this bug more organized.
OR If the server you play on has any instant cast spells with no cooldown.
(Prototype has one for shaman and warlock.)
Next, You will need to make 3 macros.
The first macro will be-
Your second macro will be-/use Greater Planar Essence
/use Lesser Planar Essence
/use Greater Planar Essence
/use Lesser Planar Essence
/use Greater Planar Essence
/use Lesser Planar Essence
/use Greater Planar Essence
/use Lesser Planar Essence
And the third-/click ActionButton1
/click ActionButton1
/click ActionButton1
/click ActionButton1
Once you have made them on your 2nd bar (shift+2) In the order I posted them./click ActionButton2
/click ActionButton2
/click ActionButton2
/click ActionButton2
Head the the Gem vendors and buy this metagem [Insightful Earthstorm Diamond] This has a chance to restore mana on spellcast. Socket it and then press the third macro you just made, It should spam your chat logs and refill your mana. Just press the third macro button when your running low on mana, It restores about 3-4k mana each time you press it
But watch out, It will lag you and the players around you.