Method: The otherworldly must behave as their stage dictates, until the power becomes part of them. Until the potion is digested, the bearer is vulnerable: the power is already there, but control over it is not yet.
The path roles are straightforward: the Warrior fights, the Guardian protects what is entrusted, the Demon Hunter goes against what others cannot handle.
The method long remained the knowledge of a few: church hierarchs were in no hurry to reveal it, and many otherworldly rose blindly, paying for it with their sanity.