C'Thun is clearly an awesome fight.
As a shadowpriest, the fight in which I had to perfect my gameplay the most was clearly M'uru though:
- Mass dispelling, and being ready to click + single-target dispel in case of resists (targetting macros didn't work here as it could target dying mobs instead of the one that had resisted),
- SWDing the Void Sentinels and leading them to their tank whenever darkness prevented him from grabbing them to their tanking location,
- Killing the Void Sentinels,
- Multi-Dotting the humanoid adds that weren't to be sheeped (we used sheeping tactic), and Dotting the sheep about 3 seconds before it was supposed to break,
- Assist the other side if for some reason DPS was too low (wasn't needed on actual takedowns but I have still been doing it quite a lot before that),
- All of this while maximizing DPS on M'uru by keeping DoTs up as well as an full DPS cycle whenever there was nothing else to do (VT and VE were quite important), while being aware of the timers in order not to spawn Entropius while adds were incoming...
- And while being quite busy doing this job, my mana was dropping quite fast (especially due to mass dispels and multi dotting), which forced me to be extremely attentive and preventive on when to use what mana CD. That especially meant using an early shadowfiend after dmg trinket, making sure that mana tide wouldn't be used at the same time, keeping mana pots off CD until shadowfiend and mana tide were both on CD, and then using them every CD until the end of the fight, as well as the other shadowfiend, which was to be cast after darkness of course.
That's for phase 1... It was really awesome
I think that what I love in fights are:
- Not knowing all the tacts before I enter the boss' room and discussing what can/should be done to counter this or this ability,
- Once the tacts are known, have an encounter that has so many parameters that not only you need to adapt and communicate important things at raid-level, but also you have to make decisions at player or group-level on-the-go. For instance, C'thun fight, you get out of the stomach and positions are a bit fucked up: it's not like anything is hard but a few persons have to notice that positions are bad, make space cleverly while trying to guess where each other is going to head toward. That is adaptation and team spirit, and it's what prevents the fights from becoming boring