Creating a Earth Sorcerer subclass in DnD 5e. Any other ideas for subclasses based off of Runeterra?

Recently, I've been running a DnD campaign set in Ionia, and the lads have been loving it. I've reflavored some stuff, but one of my players recently asked if there's anything in the world of Runeterra that could constitute a new subclass. First thing I thought of off of the top of my head was Taliyah who is basically a sorcerer with the ability to control stone (I know there is the Stone Sorcerer, but it's not exactly like the earth bending shit that Taliyah does.)

Are there any other ideas for subclasses for existing classes based off of Runeterra that you guys can think of? Heck, even just normal classes, although, making a full on new class is on my list of priorities at the moment. It'd just be interesting to hear ideas.