Magnetic (3.5e Flaw)
From D&D Wiki
You become magnetic. Everything metal that comes within 5 sq ft of you attracts to you.
Prerequisite: Made of metal, (this includes if you have a metal arm but a flesh body, but only that arm would be magnetic)
Effect: Enemys gain a +2 on attack/damage rolls with metal weapons (example a long sword), or a +1 on attack/damage if the tip is metal (example an arrow)
Benefit: Bonus feat, and if your weapon is made of metal you can never drop it. Also, other magnets are repealed away from you.
Roleplaying Ideas: You are Magnetic and this supernatural ability may scare opponents away.