Mogu'shan Palace: Gold

Stuff we learned on our way to gold:

- Given enough AoE stuns and LoSing casters, you can (and probably have to) pull all mobs up to the first boss in one go (heroism helps, you won't need it before the final boss anyway). If you choose a good point for activating the roleplay you can even prepot the boss fight after the giant bombing (Combat actually starts before the boss becomes attackable, quite annoying).

- our tactic for the way to the second boss was actually wiping: Pull all the groups, jump down to the boss, use ankh/soulstone/invisibility/NE-racial. You don't need the mobs for the mob count actually, and (for us) an invisibility potion did not cut it. Alternatively, you can use the potion to skip all packs before the two casters on the balustrade.
Some videos show usage of a greater invis pot for the first three packs AFTER the second boss instead. Did not work for us (no group runspeed available), but might for you.

- focusing down all adds (obviously starting with the iron hide) before the boss seemed to be fastest for us on boss #2. Of course some crossdotting doesn't hurt after the ironhide dies. Kiting to prevent the stuns from the add is crucial.

-you can simply cc the two mobs after the second boss and use the elevator, they'll reset and you'll leave combat.

- pulling more than one pack before the final boss proved to be very dangerous due to armor reduction debuffs. It is possible, but risky.

- our setup: Prot Warri, Disc priest, Fire Mage, Elemental Shaman, Affliction Warlock (me). With only about 12 seconds left I'd say the Disc Priest dps (about 18k throughout the instance) was rather crucial for us.

- Final boss is comparatively hard due to a lot of stuff flying around and extreme spikes on the tank, be very careful, we screwed two good tries here.

Let me finally say that Challenge Modes are the most fun I had in 5-mans since classic and early bc, thanks a lot Blizz for this truly challenging (see what i did there?) experience.

Completing these Gold achievements rewards a teleport spell so you can quickly get to the instance when ever you want. These spells are fly-out spells, meaning they are grouped and only take one actionbar slot -that's nice. The fly-out group consists of:

[spell=131204]

Temple of the Jade Serpent: Gold

[spell=131205]

Stormstout Brewery: Gold

[spell=131206]

Shado-Pan Monastery: Gold

→

[spell=131222]

Mogu'shan Palace: Gold

[spell=131225]

Gate of the Setting Sun: Gold

[spell=131231]

Scarlet Halls: Gold

[spell=131229]

Scarlet Monastery: Gold

[spell=131232]

Scholomance: Gold

[spell=131228]

Siege of Niuzao Temple: Gold

The complete list (in case this gets outdated) of Gold dungeon challenge achievements can be found here.

Also, if you ever wonder what heroics you have yet to complete and unlock challenge mode for, simply paste this into the chat on your character:
/run for x,i in ipairs({6456,6470,6756,6758,6759,6760,6761,6762,6763})do local _,_,_,c,_,_,_,_,_,_,_,_,m,b=GetAchievementInfo(i)print(x,"\124cff"..(m and"00ff00C"or"ff0000Inc").."ompleted\124r",GetAchievementLink(i))end

Mythic+ portals will be account-bound in War Within.

From an interview with Ion Hazzikostas and Morgan Day during the 2023 BlizzCon.
Link here, you can find the question and answer at 15:06.