Realm Powders are mystic substances that grants simple and concrete powers to those who consistently use a specific powder. Over time, these substances infuse the partaker with the ability to see and interact with the "Realm", a version of the world defined by energy rather than by matter. Each substance has a unique and localized organic source, as well as a very specific combination of powers it grants.
Realm Powders are from my game "Murder in the Court", an aborted campaign about a murder in a fantasy version of the imperial Chinese court. While that game had issues that led it to end early, realm powders were not one of them. They served as our mystical element, and a lot of successful game-play was driven by what individual powders could or couldn't do, both in PC and NPC hands. I share it with you now, as an example of a "Powers System I've Used"