Spirits of Auchindoun

Just a bit of clarification. Since this quest is a daily, you can acquire it anytime, once a day. But you can't complete the quest if the timer is running. When the timer runs out and the words "Towers Controlled", followed by a number, appear you can complete the quest, and can cap a tower even if the other faction already has it.

Another thing that confused me when I first attempted this quest: The towers are not visible on the in-game map unless they are available for capture. In other words, you can't see them (on the map) if the timer is running. They are just barely visible on the mini-map, they are small light green-grey circles. Once the timer runs out a grey icon for each tower pops up on the map.

It has already been mentioned that your faction gets a buff when you have captured all the towers. I don't think anyone mentioned the fact that spirit shards (used to buy trinkets, etc.) also become available to that faction. They drop from bosses in the Achindoun dungeons.

This does not count toward Terror of Terrokar.

Converting a Tower to Horde is 1 minute's worth of work.
1) Flag for PvP by rt clicking on your picture and click enable. On a PvP server you don't have to do anything different.
2) Stay within 20yds or so of the tower while flagged and it will begin converting to your side. If you are flying, you MUST land. You can land on top of the tower and get credit, but it can be tricky.
This process takes roughly 1 minute but the time reduces by 50% for every other Horde player standing in range and flagged. Any Horde player of any level (I've had a 57 do it) will convert the tower.
If an alliance player is alive and in range while flagged the conversion will stop until he leaves range or is dead. This operates the exact same way as the Towers in EotS battleground.
If you can get all 5 converted you get the 5% XP buff and Horde can gather Spirit Shards from bosses inside the dungeons. And yes only 1 tower is needed to complete this quest. You will have to wait for the entire 6 hours to finish counting down to attempt it again.

Easiest way is to gather 10 players together, put 2 on each a few minutes before the timer expires and boom they are all yours 30 seconds afterwards.

-Keonka the Mangler