Add-Powered Bubble

The boss has some sort of impenetrable shield, or flies around the battlefield untouchable by mortal heroes, or simply regenerates so fast that there's no hope of killing it... unless you kill its helpers first. Such a boss has an Add-Powered Bubble. Either way, the adds generally stop coming once you've accomplished this.

Sometimes the bubble is penetrable, and you must devote some of your attention to add management while still keeping some people focused on opening up the boss to attack. If it isn't, and your only hope of Phase Transition is to kill some quantity of adds, you're in a Trash Gauntlet.

Examples

• Sunwell Plateau
  • M'uru becomes Entropius, the "true" boss, when his HP is depleted. Until that time, he has adds which continually spawn.
• Ulduar
  • Razorscale is periodically DPSed while in her air phase via the harpoons. Until 50% HP, though, the raid must kill her adds to enable themselves to use the harpoons.
  • Freya's Attuned to Nature stacks are depleted by killing her spawns.
• Icecrown Citadel
  • Lady Deathwhisper surrounds herself with a mana shield and spawns adds (and spams Shadowbolts...) during her first phase.