It wasn't the hardest but maybe one of the more influential bosses.
I've seen guilds decimated simply because their tank(s) got offers they couldn't refuse by further advanced guilds just for this fight.
Yeah, it wasn't a real requirement but it surely made it easier.
In a WoW where guilds where prepping every available advantage possible (Onyxia/ZG worldbuffs for example) people did close to anything to get a bigger chance to get ahead.
On Sapphiron they needed 8 priests so then it was the priest turn to get stolen from the 2nd/3rd guilds, my time to switch guilds. Got to be part of the 2nd 4 Horseman kill of my new guild that week and there were huge nerdscreams even on a 2nd kill, never experienced that again and should be proof that it was one of the fights that took the most out of people.
Must say though that healingwise, there will never be a harder fight than Sapphiron in full frost resist gear aka no regen. For me together with Twin Emps and Patchwerk the three best fights of WoW.
It's just another one of those classic Vanilla fights that needed something different, be it 8 tanks or everyone kitted out in resist gear. It was pretty difficult to learn but just like so many of those fights it was still a case of "no rng" (apart from the void zones) so once you knew what you were doing it was a one shot every time after.
Found my first kill on youtube (was a rogue at the time)
also found our first kill of Sapphiron, woop.
Actually one of the most unique things of healing back then was the management of it all, there was no padding to pad. You had to be efficient on healing and the thing that allowed so many healers to have such a higher skill cap than now was the different ranks of heals which was unfortunately removed. That was one of my favorite things when doing a long fight, down ranking heals for ultimate efficiency when it was needed.
prenerf C'thun, Prenerf M'uru, and 25 heroic LK with 0% buff all say "Hi!"
heroic LK 25 in a PuG...during Wrath
Yeah, it was pretty damn hard convincing tanks to leave their guilds to raid with another guild for one boss.
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I recently tried a pvt realm again and my god I forgot what it was like to not heal on autopilot with constantly having to worry about every single spell mana-wise. Instead of having a shadowfiend at my disposal every minute. That was the better design for healers imo, focussing on mana management more instead of just on healing done.
I find I have to use my brain less healing these days, never cancelling a spell and even spamming random PoHs on full health groups just to get Divine Insight procs, no challenge if you have a bit of a brain and know when the heavy damage is going to come in.
Oh look one of these threads again.
People don't forgive, they forget. - Rust Cohle