Here's a write-up I found, figured I'd post it here, for a look-see for when the time comes. It's Gruul, the guy we fight when we become strong enough and capable enough to send 20 players into his lair within the Blade's Edge Mountains.


Ranged dps sets up around the lair, designated areas are assigned (IE: Healers East, Ranged DPS North and West.)

Gruul will grow at a set time interval.  As he grows he will do more and more damage.  Typically you will want to down him as quickly as possible or he will become too strong and will one shot the tanks.

His main attack on the raid consists of a ground slam followed by a shatter about 7 to 10 sec after the ground slam.  Safe spots are along the wall, basically out of sight. There's a diagram but I couldn't get it to show up here..  If you are not standing in your safe spot during the ground slam you will be tossed into the air and land randomly.  Being in as safe spot means you won't get tossed into the air and will allow you to move into your shatter position correctly.  The safe spots are typically on rocks or behind rocks.  You need to make sure you are out of line of sight of ground slam.

Right after the ground slam, you must move from your safe spot (white circle) to your shatter position (yellow spot with your number).  The shatter spots are designed to spread people out.  Note that after ground slam your movement is slowed.  As soon as ground slam is done, you must immediately move towards the shatter position.  During shatter, everyone will  be frozen and shatter.  Shatter  causes a small amount of damage to each person in the raid.  However, if you are standing too close to another person, the shatter will cause damage to those near you as well.  So the idea is that during shatter, you are not standing close to anyone.

Other than ground slam and shatter, there will also be occasional cave ins on a person.  If you get a cave in, you will get a debuff and white things will fall on you.  If you see this, you need to move and get out of the cave in asap.  Due to cave ins.  You should avoid standing right on the safe spot too soon.  You should stand near it but not on it.  Start moving into safe spot at about 10 sec before 
ground slam

Other Notes and Tips

For everyone: Turn on your friendly V targetting.  This will allow you to see whether or not people are too close during shatter.  If you can't see their health bar. you are farm enough.

For the tanks:  Gruul's main damage will be applied to the main tank.  the tank will take a lot of damage so most healing will be needed on that tank.  Every now and then he will also do a hateful strike.  Hateful strike is directed at the SECOND person on the agro list.  We currently run gruul with 3 tanks.  The three tanks should try to stay as top 3 agro.

For the healers:  Most healers will heal the main tank and the tank taking the hateful strikes.  Please watch this carefully.  Paladins should save their bubbles for later grows and beyond to clean the silence so that someone can continue healing.