Hello Aternos team, I have two mods to suggest.
They're quite similar yet so different. (I apologize for including these in a plugin suggestion, I didn't know that it really mattered)
Dragon Mounts 2: Explore the world with dragons! Hatch them with dragon eggs found around the over world. Difference between this mod from Dragon Mounts 2 is that it's 1.12.2, adds fire breathing, armor, tools, etc. It's also a continuation of Dragon Mounts, which was discontinued unfortunately. https://minecraft.curseforge.com/projects/dm2
Realm of the Dragons: Also a continuation of Dragon Mounts, adds armor, tools, eggs, and fire breathing. Instead of elements, dragons are gemstones (garnet, sapphire, ruby, etc)
https://minecraft.curseforge.c…realm-of-the-dragons-rotd
If it comes to it and you had a choose one mod, I would choose Dragon Mounts 2 instead. Thanks!