Hello!

I love your mod and have a few customization suggestions for custom dragon breed datapacks.

My first suggestion is an elemental bite. For example, if a fire dragon bites a mob, that mob lights on fire. Or if a skeleton dragon attacks a mob, that mob gets the wither effect.
My second suggestion has to do with blocks. It would also be cool to give dragons (or their riders) specific effects if they are touching a specific block (for example the rider of a water dragon water breathing while underwater or a fire dragon regeneration while touching fire/lava). Also, for example, in a home dimension, some effect is given to a nether dragon while in the nether.

Thank you for considering and reading.

P.S. I also really like that Dragon Size Parameter for Datapacks from @Peekofwar

Another suggestion I have is Optifine Random Entities support. It would be cool to have a rare variant of a dragon (sort of like a shiny from Pokemon) and to just have some different variants over all.

:)