Talk:Jeanne D'Arc/@comment-1817881-20151005192955/@comment-25751901-20151006091414

It is random. My first Jeanne drop was when I fight about 60 Jeannes or so.

Ace might help, though. According to Help > Legendary Archwitch Section,

"5) Rewards

The participant who deal the most damage to a single LAW will be crowned the "Ace" and have the best odds of earning a reward. *Participants other than the Ace also have a chance of earning a reward accoring to the amount of damage they dealt."