Originally Posted by
Eurhetemec
Yeah leveling in 9.0 is indeed different from being well-geared in 3.X lol. You can't ignore mechanics. You couldn't in 8.X either whilst leveling tanks through Wrath.
Most Wrath dungeons have both bosses that can kill you and trash packs that can kill you if you pull more than one. Not all packs are like that, but until you're sure one isn't, you need to treat it as if it is. This includes packs that don't "look" dangerous.
DKs need to pre-emptively use cooldowns where they can - this does let you ignore a couple of mechanics (for example you can AMS to drop freeze stacks on the dragon of hopping if you get bored of hopping) - and if you're too low-level to have them (I don't know what level and abilities they let you escape from the starting zone at now, but if you're an Allied Race I guess you could be as low as 10), that might be part of the problem.
Some dungeons have close to no mechanics - Violet Hold, for example - there can be a bit of kiting if one particular boss appears, but most times it's tank and spank for everything in there. Whereas, say, Halls of Lightning requires you to know both the boss and pack mechanics - you need to interrupt certain mobs or they will happily wipe a group. Other ones, you have to do things, like, y'know, not pull the charge-up golems whilst they're charged up.
With bosses, follow the mechanics - don't try and stand in silly shit unless you have an appropriate cooldown and for some things no cooldown is appropriate. I see idiots trying to ignore the dude who turns into a sort of spider of lightning, for example. You're supposed to run out, and he's not damageable so it's pointless and stupid not to, but people try it.
I'm mildly surprised to hear Ymiron killed you. You often had to use cooldowns to live there in 8.X, whilst leveling, but unless the group's DPS was really low, he usually was scary damage but not group-wiping kind of scary. A healer who isn't prepared for fairly large damage might just let you die by being too slow to react or trying to use minimal measures. Ymiron does high burst damage with spaces between, and needs to be healed accordingly. Death Strike obviously helps - and time it correctly for immediately after you take damage, generally speaking - but the healer needs to do more than put some hots and wind up a slow heal or whatever there.
It's possible balance is fucked too - but ignoring mechanics, both trash and bosses, was a great way to die horribly in Wrath dungeons in 8.X, and it sounds like you were doing that so 9.0 may well be similar.