This is what I got from the clip you posted:
“This season is the water season so it’s kind of nice to we had a lot of discussion in the writing process about how we can make this little trilogy in the end focus around water…(laugh)…it’s funny that that’s like, uh, taken as like uh ridiculous, you know ridiculous pitch by Ang and that’s exactly what happens…(laugh)…in the next episode. But it’s cool ‘cause there’s you know stuff in here that we set up early on in like episode 7 when he first goes to the spirit world that that kinda pays off here. I think that painting in the palace was by Brian Evans…really beautiful painting. And this is the spirit oasis.”
I hope this helps…