Buzzsaw Shark and
Beautunaful Princess can start an engine on its own but otherwise, as long as you don't draw 2 get identical fish/shark monsters, (except
Right-Hand Shark +
Xyz Remora ) you will ALWAYS be able to start an engine as well!!
if you also draw Xyz Remora while Bahamut Shark is ready to activate, it is recommended to take Utopic Draco path to use the effect of Xyz Remora to extend the combo to get either Number 4: Stealth Kragen or another Bahamut Shark to get Toadally Awesome.
Utopic Draco path will also allow you to get bring out Number C101: Silent Honor Dark due to Rank-up magic able to search by the effect of Rebaian send to GY by Utopic summon