The question raised in threads like this one have been on our minds a lot as we’ve been testing on the PTR the last couple of months.
So let’s take a moment before Naxxramas releases tomorrow and talk about how boss abilities work in WoW Classic and Original WoW.
Why doesn’t Kel’Thuzad use abilities on strict timers?
The simple answer is, for the most part, that’s not how boss abilities work in World of Warcraft (Classic and Original). Bosses and other creatures are rarely set up to have exact timers for spells and ability usage. They often make decisions which were set up to be somewhat unpredictable. Multiple spells or abilities can be available to the boss, and they will deliberately evaluate what to do following their last spell cast.
Additionally, some bosses have abilities that share cooldowns in some way, similar to how players can’t activate two empowering on-use trinkets at the same time. This means that if a boss uses a...
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