Syarat
1. dragon level 20+

 Formula 
Legendary Dragon = Cool Fire Dragon + Soccer Dragon

 Cool Fire Dragon + Soccer Dragon

 Poo Dragon & Nenufar Dragon

 Armadilo Dragon & Cool Fire Dragon

 Pirate Dragon + Pirate Dragon

 Soccer Dragon + Gummy Dragon

 Armadillo Fire Dragon + Cool Fire Dragon

 Soccer Dragon + Cool Fire Dragon

 Gummy Dragon + Cool Fire Dragon

- Crystal Dragon = Coolfire + Soccer
- Mirror Dragon = Gummi Dragon + Cool Fire Dragon
 Cool Fire Dragon + Cool Fire Dragon

- Wind Dragon = Gummi Dragon + Cool Fire Dragon
 Soccer + CoolFire
 Cool Fire Dragon + Cool Fire Dragon
 
- Additional
1. LV  take effect
2.It's not 100%  succeed