One of the tougher achievements in WoW is the malygos <You don't have an eternity> which basically is downing Malygos in under 5 minutes. This achievement need high organization skills because you will be stacking sparks. The information below should help you.
What you will need.
1.multiple druids in the raid.
2.multiple death knights
3.ventrilo
4.moderate gear
5.coordination skills
6.ability to move the boss
7.basic knowledge of the fight. see Malygos - StratsFu if you need help
When you engage Malygos fight him normally and move him so that the main group can be in the center for most of phase 1.
Whenever the sparks spawn death grip or kite via Malygos movement and then root.
When near 60% (what my guild did) kill all the sparks via aoe.
If done properly you should have them all stacked.
Pop blood lust and burn.
Most likely you will be able to get him into deep phase 3 then just finish the fight.
This was the method used by the guild who got the world first for this achievement.
The toughest part of this is killing the sparks and having them group up after a couple tries you will probably get it.
WARNING!!!
DONT LET MALYGOS EAT THE SPARKS you will lose
Video of this fight
YouTube - Malygos in 5 Minutes: Tutorial
i gathered some of my information from here and found it very helpful. gl