Synthesis for legendary

hey guys please help me!!! i Need to know if i get s legendary from Synthesis without s Monster. or i only get s legendary when i us s Monsters to Synthese?? please help me fast. thank u

You do only get a pure S legendary when you synthesis pure S monsters
When you synthesis monsters with some A+ stats you have a good chance of getting none pure S legendary

Basically, your resulting monster from synthesis will have stats that are the average of the stats of the monster you used for synthesis.
Therefore, if you use all pure S monsters for synthesis, the resulting monster will be a pure S monster. If you used all A+, the resulting monster will be A+.

Good luck!