Took a long while but I'm finally done the comic for my au! (If you see a mistake no you don't-)
Much like in canon, Macaque works for the Lady Bone Demon. In this, however, he gives her predictions from what he can hear of the past, present, and future. Or at least what he can make of what he hears. This means there are a lot of nuances he might not always recognize since it depends on how he's able to interpret what he's hearing. Before meeting MK, Macaque was only able to distinguish Wukong and LBD in his predictions. Only later on after meeting MK, will he be able to understand and give a better interpretion (hence why he's surprised to make out MK's voice in the comic during making the latest predictions).
The lantern he uses was something he already had centuries before working for LBD. Like in the show, she needed it for her great plan but unlike it she knew from the start that Mac had it. She just allowed him to keep in hopes he'd give her a better reading. It didn't.
Predictions don't change, just how much Mac's ability to understand it. This means is even if you ask the same question but the times you're asking are years apart you'll get the same cards you just might know a little more than the first. LBD keeps asking the same question: will I finally rebuild the world the way I desire it? And gets mad when she gets the same response of no you won't.
The cards she gets are: The Death(past), The Devil(present), and The Tower(future) card. Some questions only need insight from the future but her past and present contribute to how her future ends up more specifically I'd say. The Death card talks of imprisonment, The Devil her brief moment of success, and The Tower when she's been defeated in the end. In retaliation of the prediction never turning out in her favor, she takes the lantern since it can be of better use than predictions in her eyes.
I don't what else to explain so feel free to send in asks and I'll try my best to answer them! :D









