This guide is for the people that had a late start on raiding and now that they've killed Gruul/Mag they need to go on to the T5 level. This guide is for the easiest boss in T5 content: The Lurker Below. Here's the strat.
If you're going for your first kill of Lurker, you're going to need these requirements.
1. A 375 fisher. (Having more than one is good, because one person fishing can take a while. >.<)
2. A tank with at least 14k health unbuffed, defense cap and a decent amount of parry/dodge. Some other people claim you need more than one tank, but that only lowers your dps, one tank is all you need for this fight. After a few kills of Lurker you can bring in more tanks to make Lurker easier, and to get Mallet's for your tanks. =)
3. At least eight ranged dps. (Two HAVE to be mages.)
4. 7 healers, 1750 heals+.
5. A good raid leader to call out Lurker's abilities.
Now I will explain thoroughly what Lurker's abilities are and what you need to do for them.
1. Spout, Spout is THE MOST IMPORTANT PART OF THIS FIGHT!! If you get hit by spout, you die. To avoid Spout, all you have to do is completely submerge yourself into the water, where Lurker stands. (For melee). Or behind the island. (Ranged).
Spout is very easy to avoid, and it can lead to your raid's downfall if too many people get hit by it. He will do spout right away when he submerge's and every so often while he's up.
2. Water Bolt, Water Bolt can hit any random ranged person for 3-4k AND it will hit any person who is near the person who got hit by Water Bolt. This won't happen occur for melee.
3. Submerge, Submerge is the 2nd phase of the Lurker fight and is very tedious. Basically what happens is Lurker submerges his entire alien body underwater and calls nine nagas to aid him. Six of the nagas will spawn on the three small islands, two per each island. Three will spawn on the main island. One will be on the left, one will be on the right and one will be in the back middle. Two mages will sheep the left add and the back middle add. For the add that wasn't sheeped the tank will have to pick it up immediately and go crazy on it. The dps who are NOT doing the six adds will be helping the melee killing the main island adds. So for this part, the tank will grab the first add, dps kills it, then the tank will need to move COUNTER-clockwise to the back middle add and generate aggro on it, dps kills it. After that the tank gets the left add, generate aggro, dps kills it. During all of that six ranged dps will be on the mini islands, two per each island, one dps will kill one naga on the island and the other dps will kill the other naga. If you kill your add, help the guy on your island first, and if the other dps hasn't killed the nagas on the main island, help them. You will be doing ALL of this in one minute.
4. Whirl, Whirl is an OP whirlwind that Lurker does every eighteen seconds. Your raid leader will need to call out when it's five seconds to Whirl and the melee will need to back off. He will ALSO do Whirl after the Spout he does from coming up underwater.
Special Trait: Lurker will only attack the tank, so dps go ALL OUT when he is up. You want to beat the hell out of him before he submerges.
This fight is a clockwork fight. He will go back and forth submerging and coming up. You need to kill him as fast as you can so you have less nagas to deal with.
This was my first guide don't be too harsh. Btw good luck to all those people who need to kill Lurker. =)