You can give players a Permission-based enchantment chance multiplier.
Addons:
OccurrenceMultiplierPerm:
default_multiplier: 1
info_message: "&a[TE-Occurrence Multiplier] Your occurrence multiplier for &e%enchantment% &ais &e%multiplier%&a."
help_messages:
info:
msg: "/te omulti info : shows your current occurrence multiplier value."
permission: "tokenenchant.occurrence_multiplier.info"
# you can use the permission nodes listed here to give users/groups multiplier permissions such as
# tokenenchant.occurrence.multiplier.Explosive.2,
permission: "tokenenchant.occurrence.multiplier"