There's an Amphitheatre quest series in Zul'Drak, which is very much like the Ring of Blood series done in the mid-60s in Nagrand.
With the exception of the Amphitheatre quest chain in Zul'Drak, if you complete the Ring of Blood series in Nagrand, you'll get an achievement for it, plus the quest reward.
In order to start this quest chain, level 75 is the minimum level you need to be. The tip is that you should make sure that everyone in your party has picked up the quest before you start it and between every round and make sure everyone has had a chance to turn in the previous stage before you start the next, which is the most important one in doing this chain.
If everyone has picked up the quest at first and starts up the same, then they have the ability to turn in the completed first stage and one person can pick up the next stage's quest and everyone else in the group will receive a pop-up window asking them if they'd also like to join in on the same group quest.
If one person in your group gets behind, he or she will have to start the event in order to catch up, and everyone will have to re-kill a mob they had already killed.
It is without a doubt that the Amphitheatre chain is challenging enough to coordinate with a group of five players without any additional factors. But you will face the problem of competition, which depend on when you attempt the chain.
In this chain, the competition makes it so generally, your group has to either back off entirely, wait for the other group to finish or more likely, repeat boss mob stages as your various members get left behind at one stage or another.
Even same faction groups can't be counted on to go with the polite route, so if you are stuck having to repeat bosses, you should keep in mind that you are getting experience every time you kill those beasts and experience is the name of the game when you're leveling.
It is well worth that your group will often have to compete with other groups attempting the same encounter during the busy time and it's pretty difficult to tell whether the boss coming into the Amphitheatre belongs to your group's attempt or to the other group's attempt.
Watching for the first shout that comes out from the mob entering the Amphitheatre is the easiest way to tell whether the boss coming into the Amphitheatre. All but one or two stages will include a name being shouted out, and if that person isn't in your party, then it's not your quest mob.
If you want to help the other groups get done fast, or watch them duke it out themselves, you can make a decision from there.
When it comes to rewards for the Amphitheatre Chain, there are some sweet rewards at level 75. Everyone gets almost 120 in wow gold, a handful of Runic Healing and mana Potions, plus a stack of bandages, and then a choice of weapon like Icier Barbed Spear, Screw-Sprung Fixer-Upper, Wodin's Second-Best Shanker, Chilly Slobberknocker, De-Raged Waraxe and Crimson Cranium Crusher, all of which should be a nice upgrade at this point.
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