A greater Harper pin was a heavily enchanted version of the lesser Harper pin. The upgrade usually happened after an agent had been in the ranks for a few months or after an especially significant mission.
This magical brooch provided the wearer with significant protection against specific hazards. First, it shielded the wearer's mind from all mind-affecting probes or attacks, greatly improving the chance to resist such magics and granting a permanent undetectable alignment spell. Next, it shielded the wearer's body from being scryed or detected by magical means, effectively granting a permanent nondetection effect. Finally, it protected the wearer's body from all magic missile and granted a permanent resist elements versus electricity.
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