Combat resurrections are an extremely powerful tool that players have while in combat. Naturally, we apply some limitations. In Mists of Pandaria, that limit was 1 resurrection during a given raid boss encounter for 10-player modes and 3 for 25-player modes. With Flexible difficulty introduced in Patch 5.4, we erred on the forgiving side, and gave Flexible Raids 3 resurrections regardless of raid size.

In Warlords of Draenor, the Flex tech has expanded to more difficulty levels, and we needed a new system to handle combat resurrections more fairly. We knew that continuing with a constant 3 would encourage using the smallest possible raid sizes, while scaling with hard breakpoints would discourage specific group sizes just under those points. Additionally, the limit is not shown anywhere in-game, so it can be easy to lose track of how many resurrections the raid has available (or even know that the limit exists).

So we’ve built a new system to be more transparent, and improve usability.

• During a boss encounter, all combat resurrection spells now share a single raid-wide pool of charges that’s visible on the action bar button.
  
• Upon engaging a boss, all combat resurrection spells will have their cooldowns reset and begin with 1 charge. Charges will accumulate at a rate of 1 per (90/RaidSize) minutes.
  
• Example 1: A 10-player raid will accumulate 1 charge every 9 minutes (90/10 = 9).
  
• Example 2: A 20-player raid will accumulate 1 charge every 4.5 minutes (90/20 = 4.5).
  
• A charge will only be deducted when a combat resurrection is successful (when the target accepts the resurrection).
  
• Raid frames now show a debuff indicating that a dead player has a pending combat resurrection available.
  
• Outside of raid boss encounters, combat resurrection spells retain their normal cooldown behavior.