Don't smother your Troll Dragon too much. They're a bit - well, let's call them shy. When they're not brooding in their habitats, they like to lie in wait under bridges, occasionally popping out to nick fruit from the carts of farmers passing by.
More than anything else, Troll Dragons like to tease the other dragons in their habitat. Troll Dragons drive their neighbors to the brink of frustration by poking them from behind, then flying off, leaving them wondering what happened. This will repeat until the dragons become irate.
Sure, Troll Dragons have their quirks, but they'll warm up to you after a time. You just need to be firm with your dragon - be sure to teach it right from wrong, and teach it to not be a pest to dragons who anger easily. After a while, it will become loyal.
Epic Troll Dragons are clever. TOO clever. They can pull pranks on the best of caretakers. You don't want to be around when an Epic Troll Dragon decides to play a prank on you. Keep your Epic Troll Dragon as happy as possible, and maybe recommend other targets for its mischief. Like Rex. He deserves it.
By breeding two dragons that collectively contribute Green and Black to the color pool. If a parent has the appropriate minor colors, missing requirements may also be added to the pool, even if neither parent has the originally required color types.
When the Black color is alone in the color pool, it will add pure dragons of its component colors (Blue and Purple) to the list of possible outcomes, but it will not split into its component colors. When Black is included in the color pool along with one or more other colors, the Black color can split into Blue and Purple. However, if it is split, then Black is no longer in the pool for the duration. Thus, the presence of Black in a pool will either add the Black color if it does not split or the Blue and Purple colors if it does split.
When considering hybrids of the Black color whose other colors are all split color components of Black (Blue and Purple), the Black color may contribute both Black and its split colors (Blue and Purple) if both parents have the Black color. For example, breeding a Night Dragon with a Troll Dragon can result in a Deep Dragon because one parent contributed Black while the other contributed Blue (through splitting). Keep in mind that the Black color will not split if it is alone in the pool, so you must use at least one Black hybrid as a parent if you want to take advantage of this method.