Star dragons get an Aura Flare-type skill and the ability to heal itself

In C3 the most popular dragons (Hatchling and Strider form) were Twilights (Dusk Striders). Most owners have these as Twilights remain the buy luminary gold fastest dragons to level (explained later).

Speaking of Chronicle 4, the Wind and Star dragons get new skills, but not Twilights. Wind dragons get an Ultimate Defense-type skill along with their stun-type skill. Star dragons get an Aura Flare-type skill and the ability to heal itself, but they lost the Hate skill and a ton of HP.

Twilights are supposed to be the fastest dragons and in C3 they had no other ability but speed. It seems this isn't the case, as all Striders appear to have the same run speed.

All pets in C4 get "beast soul shots, spirit shots, blessed spirit shots," which makes their damage output and skill ability stronger.

Drawbacks: It's not cheap to raise a dragon overall, and some are more costly than others. In order of expense, you can expect to pay more to raise a Star, a little less to raise a Wind, and even less to raise Twilight.

The primary cost is food. It takes more food to keep a Star/Wind fed than it does Twilight. You can manually feed the dragon or simply keep food in the pet's inventory and it will auto feed itself at 50%.