new way into malistairs lair. there is no longer 3 crystal stands, only one. i see alot of older posts saying you need 3 people and theres a timer and all this other stuff and that is no longer. i did this dungeon solo and all you have to do is beat fire guy and ice guy go into dragon claw and through door then light crystal then it says DOOR UNLOCKED. thats it, then you go in to fight malistair.
Yes, they changed it over a year ago. KI intentionally made it easier to solo Malistaire's lair due to it being a requirement for Celestia and the lack of people to group up. Before it required a group of people to unlock the door together.