Where's my damn light cycle, Tron?
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The second of Nefarian's minions on the TDC menu was the Omnotron Defense System. This is a group of four golems, each with specific powers. At any given time two of the golems are active, periodically rotating through the golem aspects. This means that environmental awareness is the key to this fun, challenging fight.
The golems must each be tanked when they activate and dps'd as appropriate. Complicating this is the mechanic that has each of the golems shield themselves at 50 energy; it's critical that dps not hit shielded golems, as this will cause a range of debuffs to hit the raid. While it may seem like managing this target switching mechanic is more than enough to keep most raids on their toes, each of the golems has different abilities, all of which require a different set of tactics to overcome. From spawned adds to raid killing debuffs that require on the spot interrupts, TDC worked through the chaos, and "deactivated" the defense system.
Nefarian, we're on the way down the elevator...