So when LazuLight was introduced, I thought "solar sky dragon", that's a weirdly specific name for a dragon, I've never heard of that before. Then Obsydia is revealed with a "lunar sky dragon" and suddenly I understood why they named it that way. I kind of thought "tropical mermaid" instead of just "mermaid" sounded weird too but I didn't think much of it at the time. But now I realize it probably means we're going to get another mermaid. The question is, what kind of mermaid?

Polar mermaid?
Temperate mermaid?
Arid mermaid?
Mediterranean mermaid?
Tundra mermaid?

Which do you think it will be?