Dragons and Growing

Whenever you defeat the ender dragon, the egg spawns, so like in many Minecraft mods you have to incubate the egg in heat, so I was thinking you infuse the bottle of dragons breath, with a flint and steel, so it lights purple flames, I was thinking the name of the item like (ender steel), so whenever you hatch the dragon with the ender fire, then you can go it, maybe like in an hour it can be fully grown, and it shoots dragon breath, but also whenever the dragon breath hits the ground/block ender fire appears, thank you for your time.