Æthelred the Unready's Crown

Origin
Æthelred the Unready was English king from 978–1013 and 1014–1016. His reign started in his early teens as heir apparent when his half brother Edward was murdered. Although not involved, his servants carried out the deed and made Æthelred look like an untrustworthy ruler to his subjects. His popularity worsened when he paid the danegeld, tribute money to stop the Danish from invading. He ordered a massacre of the Danes in 1002, was invaded in 1003 and fled in 1013, only to return a year later as king. The name Æthelred means noble-counseled, while Unready referrers to the bad advice he was given while king.

Effects
Wearing crown disrupts the users choices and ultimately causes the user to be hated by everyone. Eventually leads to the user wanting to massacre everyone they make contact with.