With the coming of WoW: Warlords of Draenor, Blizzard has taken another crack at improving the raid system that’s currently found in the game. This is arguably one of the most important aspects of the game, and as such deserves to be taken note of.
The first thing you need to know is that they’ve made the flexible raid difficulty mandatory across all raids. In addition they’ve also homogenized the raid finder system so that it will always attempt to fill up to 25, as such, you cannot queue up for 10 man raids.
Previously, the flexible difficulty rating could be ‘gamed’ to a degree. If you had 15 players, the boss would use abilities and fight as though you had 15 people, but if you had 14, it would fight like it was facing 10 players instead. In this iteration, it’ll go by individual player count instead.
If you’re fighting it with 18 people, it will recognize that and treat you accordingly.
This raid tuning will also be taking place in real time, and is not set in stone once you enter the raid. If you have a couple of unlucky disconnects, the difficulty of the boss will reduce to accommodate your new manpower.
A new difficulty level has also been introduced. It’s called Mythic level raiding and can only be done by 20 players. It is not affected by the flexible difficulty rating the others are subject to.
This difficulty level is intended for the most hardcore of players who want to beat the tough bosses as quickly as they can.