Peppy Gals or Universe Survival Saga cards increase the chance of drops. The following characters have both of those categories and double the drop chance.
[Clash of Pride] Majin Vegeta
Dokkan Battle Link Skills
PHY UR Characters
Confronting the Darkness Trunks (Teen) (Future)
Enough Talk... Time for an Epic Showdown!!
[Show Off Ginyu Force] Ginyu (Goku) (Ginyu Force)
Pure Saiyans (Category)