Hello I this this is my first REAL contribute to this site!
This idea i got from the "Make rats attack you" exploit, but this time its for shamans !
Okay, let me start out by telling you how i found out:
When i was leveling my shaman, i used to use Stoneclaw totem ( Stoneclaw Totem - Spells - World of Warcraft ) alot to only fight 1 mob when i actually pulled 2. What i noticed was, that rats/critters gets taunted by the AoE effect on the totem aswell!
Now here comes the real abuse of this exploit
If you are a restore shaman and dont have that much mp/5 you can do this trick, to get mana back unlimited times with Water Shield (Water Shield - Spells - World of Warcraft) You will regain mana.
So what you do is, you find one of those Critters in any instance ( they are in almost every!) and put down Stoneclaw next to them.
Now, recall your totem and put up water shield. They will hit you constantly for 1 dmg. Now start healing to get healing aggro from it, so it wont start going for another healer, if there is one
So what now? You have a level 1 mob attack you and i it interrupts my cast time? Not really, since its so low, it wont affect it. I tried for 15 minutes and i wasnt interrupted once while casting.
So how to gain mana? well as any shaman knows, you get mana back on hit with watershield, so what you do is, you get this addon: ShieldsUp | World of Warcraft Addons | Curse
and keep spamming water shield every time its running out.
Only really cons there is, is that you are in combat all the time while its on you, and i think your party/raid members are too (need to confirm this) which will make you and then unable to drink when its needed.
I hope you shamans can use this for good, i used it in Sethekk as level 67 and i had almost full mana at the end of every boss fight
-GL!