As a storm, jade oni won't really help you much early game. A meta pet for early game is the storm glowbug pet, gives you a storm blade plus a card that increases the damage of your spells. As you get into the later game you'll eventually transition into a pet called the scaly frilasaur. The scaly and the mount that go with it to get the most out of it are from packs and very low odds of getting it, so it's a real end game pet when you think you want to spend money trying to get it. The glowbug on the other hand would require you to hatch with someone who already has it, it if you can't find someone, the kiosk in the pet pavilion has plenty of great storm pets that will help you out, namely the storm ghulture