I'm not convinced these hotfixes were (all) active last night since threat didn't seem any higher and Ryolith should have died faster (due to armor dropping faster), but in any case, onto the next boss! Majordomo Staghelm.
Here are some videos (both 25-man but should give the idea) and the detailed info:
Tankspot video
Icy Veins detailed info
Basic strat:
* Staghelm can take 3 different forms: scorpion, cat and night elf. The raid configuration decides if he will be in cat of scorpion form. Every 3rd transformation he changes to a night elf.
* To initiate and throughout the scorpion form at least 7 people must stack. Not much going on here, stay stacked to split the damage.
* To initiate the cat form, people need to spread out, stay spread out since he leaps on people and leaves a fire puddle.
* When he transitions to human form he uses one of two different abilities depending on which form he was before the switch. From scorpion he casts burning orbs and from cat he casts searing seeds.
* On burning orbs he summons 2 orbs and the closest people take a stacking debuff and you need to swap so the people don't die.
* On searing seed, a bunch of people get a debuff which causes an explosion when it expires, run out of the group when it's got about 6 seconds left.
That's basically it, the damage increases as he uses his abilities and shifts. Try and minimize the number of transformations while keeping the damage at a reasonable level...