They used to cost 20 Infused rubies, now they are 10.
They used to only stack in 3’s, now it’s more (I have 9, Wowhead says now it’s 100)
Small QOL for you Mirror Chest runners.
OH, Protip:
If you CAN, try and log out in one of the mirror rooms after you did your 3rd chest of the day. This way, the next time you log in and exit the room, it will show you where the new door is, thus telling you the three for the new day (get it?)