Sargeras founded the burning legion a little more then twenty-five thousand years ago, as that is when he recruited the eredar(i love that lore change) into the legion, and seeing as they form the backbone of his armies, they were one of the first species. Now tenthousand years ago, the war of the ancients was fought. Does this mean that Azeroth has been bugging the legion for nearly half its existance?
It makes Azeroth seem overpowered. I mean, the Legion is supposed to have destroyed and/or assimilated hundreds of planets, right? And they tried to destroy Azeroth what, like 3 times already? Come on!
but Azeroth has some pretty important stuff though, like the old gods. And now Velen. And it gives Sargeras a better reason to interfere himself. Also, the exact number of worlds the legion controls is unknown, it could range from dozens to hundreds also, it's four times now, with the recent blood elf incursion in Quel'Danas, trying to open a gate for Kil'jaeden.
But they also control a few worlds they left "alive". Like the one where those Infernals are being costructed. (for those who don't know this: Infernals aren't really living beings like the Doom Guards) By the way, in the Orc campaign of Frozen Throne you can get into these portal things with incredibly powerfull enemies locked up behind some enchanted gates. Are those also in WoW? I found them to be pretty hard to beat in their later levels. Almost impossible, in fact.
This is a big thing. If a Draenei corrupted by Fel energy can become the second most powerful being in the Burning Legion, a corrupted Old God's power would rival, if not outright surpass a Titan's power. Also, the World Tree/Well of Eternity is another huge thing. It's a HUGE source of magic. It gave an entire race immortality, imagine what it could do were it Fel energy as opposed to Arcane. Lastly, the races and people themselves. They've beaten back the Burning Legion, the most powerful invasion force in existence, four times. Even if the Burning Legion has only a dozen other worlds under their control, then Azeroth has more power than those other twelve worlds.
actually, more power might not describe it. Both Argus and Draenor fell because the most powerful faction believed Sargeras was a god. The night elves were warned by elune, and assisted by the dragonflights though, making the legion-supporting faction only a small part of the defending population. All the other times, the people in power knew that the legion was evil and did not fall for their corruptive tricks.
Er. I wasn't referring to Draenor really, the Burning Legion didn't so much conquer Draenor as destroy it. And before you get after me for lore or whatever, yes, I know it was Ner'zhul who ripped it apart with his portals, but do you really think anything was living there happily after Mannaroth had his way with the orcs? I meant that the dozens of other words had failed to fight off the invasion of the Burning Legion. Being sneaky only goes so far when trying to conquer a world.
They don't really conquer worlds. They just decimate all life and use them as staging areas to destroy even more worlds. :/
actually, as far as we've seen, the usual tactic pretty much is corrupting a faction or powerful person on the world, then opening a portal. They did it on Azeroth 4 times, with Kael'thas, Arthas, Medivh and Azshara, they did it on Argus with Kil'jaeden and Archimonde, they did it on Draenor with Ner'zhul. The only other world that was really conquered/destroyed was the ethereal homeworld, but it isnt even clear if the void is allied with the burning legion(yes, some voidwalkers are, but there are some clues that this is just a small number and the void is its own independant faction).
@ Drie - Yeah, but three worlds isn't really a trend. They have a limitless army of demons, I'm fairly sure that they just flat out invade some worlds that are more directly connected to the Twisting Nether.