I know many farming spots have been shown bit ive added extra info
Scions of Storm. This is my #1 Farming spot in WOTLK. Did you hear me? I'm telling you the #1 Farming Spot in WOTLK! There are some caveats, but if you have the right professions/class then nothing beats it, in fact I dare you to find something that does. We're talking 400 gold every half hour as a bare horrible minimum. As an engineer, miner, and ranged class you would easily clear 1000 gold an hour farming these Scions of Storm.
Let's analyze the Scions of Storm, shall we?
They are annoying in that they float around looking for the souls of Taunka to disturb... part of a quest but that doesn't really matter. They have a ranged spell which can be reflected/interrupted and when they die their bodies fall to the ground, making killing them at range obviously ideal. Also, there are around a dozen flying outside the cave that require some sort of ranged ability to pull, less you want to fall a mile to your death.
They drop crystallized airs 25% of the time and relics of ulduar 33% of the time. The standard elemental gray that they drop stacks so it is very difficult to fill your bags in this place (that's a good thing). You also receive the +50% movement speed that air elementals give you when they die and it helps your kills per hour tremendously.
I raked in 4.2 eternal airs, 50 relics of ulduar, and 35 gold in grays during a half hour farming session. That comes to 385ish gold for my server. If I was an engineer I would of nabbed two of the floating air nodes just outside the cave, and if I was a miner I would of mined atleast four saronite nodes while farming (more if they respawned in both cases). If I was ranged I would have killed them twice as fast, actually more like three times as fast.
So where is this spot?
Why again is this the #1 best spot in WOTLK?
Here's a comprehensive list for the doubters:
1. As a miner you will get atleast 6 saronite nodes per hour farming session depending on respawns. Saronite is great because you can sell it as bars individually for 300% more than you would get for them in stacks of 20. This means you get a nice amount of bars but not so many that you can't sell them all at once.
2. As an engineer you will pick up probably 2-3 floating airs outside the cave every hour. That just adds to the number of eternals you will grab per hour and you will probably sell them all in a single night.
3. You will easily pick up relics of ulduar which sell great on all servers currently as the only purchasable way to increase your reputation with a faction in Northrend. 30-40% of your money farming here will come from selling these, so if they go for less than 3 gold on your server then your gold per hour will take a serious hit.
4. The kill rate is insane for ranged and you have +50% movement speed between kills, which makes for even faster killing.
See what I'm getting at? Minimum amount of time, maximum amount of profit. Just one hour of farming will net hundreds of gold that is practically gauranteed by every auction house on every server.