First of all, this is nothing spectacular really, but I'll explain it anyway
There is a quest in the Borean Tundra where you are supposed to go to Coldarra and kill a dragon. A NPC teleports you to a plateau. And then you use an item to summon Saragosa which you kill - You should then summon the NPC and turn in the quest, but you don't have to turn it in immediately, you can summon Saragosa as many times as you want by clicking the provided quest item. She gives you about 2k experience and she hits very weakly for about 400 damage per frostfire bolt.
With some kind of macro you should be able to summon and kill her as many times as you want to. No one ever comes to this place since it's a part of a quest. I don't know if it's any good really, but someone could try it out. With a macro I guess it'd be a very nice way to farm some experience while being away from the computer.
And also take in consideration that this was written four hours past midnight, might have written it badly but I hope you'll understand it anyways. Do the quest and you'll know what I'm talking about.
Good night!