Support-I think this could give new use for empty dye bottles, or a similar item(s). Like you could be walking around a planet, and you come a cross a creature element inside of an ob ject. You can, once you have like the 3 different items, somehow extract the element (maybe with a new item?) and place it in a jar. you could then buy like an egg hollowing kit from the black market, which could be used to hollow eggs, and you could hollow any egg, then after mixing all three elements with cooking basin or something, you could pour the mixed element into the hollowed egg and hatch it. ^^
I think it would be cool if we based these on the 4 celestial animals in China and Japan. Like Y'know Baihu/Byakko (white tiger for Scria), Zhuque/Suzaku (Basically a phoenix for Reiflem), Xuanwu/Genbu (Turtle dragon thing for Relcore) and Qinglong/Seiryuu (A blue dragon for Atquati). Thre's actually a 5th major constellation, but it's just another dragon so don't bother with it xD