You may have heard of this kind of black magic. Cut off the villain's hand and use it as an amulet after curing and drying. This is often found in role-playing games such as dragons and dungeons and explorers. It can provide characters with additional fingers and wear a few more magic rings. However, the hand of honor has a long history in folk, myth and reality, and its use is much more dangerous than wearing a few more rings.
The folk history of the hand of honor can be traced back to the 17th century. It was mentioned in the Magic Book Petit Albert in 1722 and the compendium Maleficarum published in Italy in 1608. As a magic prop, there are many ways to make the hand of honor, but basically the materials include the broken palm of a hanged villain or a dead child.
Source: @ke.clero