So a lot of people are currently wondering how exactly to get their exotic sword/quest, so let me clear this up for all you lovely people. Step one, get a legendary sword. Step two, finish the taken king storyline. Step three, infuse your sword until it is at least 280 attack, you will then unlock a new node increasing your energy from 50 to 56. Step four, after making sure your sword is fully upgraded, and 280 attack, head to the tower, lord shax should have a new quest for you. Step five, forgive me if I mess this part up, shax should give you a quest telling you to get 50 major/ultra kills, and 25 Gaurdian kills with your sword. Step six, after you get the required kills, head back to shax and he will give you the new step. Step seven, stay with me guys. This is where it gets complicated, (and time consuming) depending on which type of sword you have chosen (Solar, Arc, or Void) you will need to get certain rare materials, and also you will need to get an exorbitant amount of ability kills, of the same damage type as your sword. For your materials, If you chose solar, you will need to open helium filaments on the moon to get your rare materials, for arc, you need to collect spinmetal, and for void you need to collect relic iron. It is a low chance to get the rare materials, and you need ten of them, so it might take a while. Step eight, this is where it gets easy. Talk to shax, and he will tell you he needs to wait until next armsday (wednesday) to receive the alloys needed for your sword in a shipment of supplies. So just take a break, you earned it after getting those rare materials, but be ready for a fight soon. Step nine, after you talk to shax on armsday, (forgive me if I'm wrong, but I cannot do this myself until this wednesday, this is just from what the dataminers have found) he should tell you that to seal your swords power you must kill alak-hul the darkblade, and a warden(forgot his name) within thirty seconds of eachother. Now, I will update this when I do it myself if this is not the case. And for people thinking that that is impossible, I'm pretty sure its as easy as weakening them both and killing them at the same time. I will revise this if the last step turns out to be different, every other step I have done myself. And if you happen to be a titan, don't pick a void sword, trust me, bad idea. (If anyone wants to know, I am a hunter, and am working on my void sword for the quest) I hope this helps give you guys some clarity! (: Edit:I forgot one step, you need to kill the sword of oryx, (Lightsaber guy from cutscene) You need to go the the asylum, to do this, go to the founts, and there will be three warden knights, one left, one middle, one right. To open the door and get to the asylum, you need to kill all three within the extent of a single super, so weaken them, and then proceed to finish them all with your super, golden gun works great for this, stormtrancer and sunbreakers are good too. After opening the door, and following the path, you'll get to the asylum, there will be a bunch of adds, kill as many as you can before the sword shows up, the sword himself is pretty weak, to take down his shield use your sword (with ammo in it) then you can damage him normally, or with your sword depending on what you prefer.