Baldur was born with all radiant beauty and he was as beautiful as a sunbeam everyone who saw him loved him right away but Hodur on the other hand was very dark and unhappy and he was born blind but Frigga and odin learned to love him
Even though everyone loved Baldur there was one person that didn't which was Loki. He saw how popular Baldur was and became furious with envy. And Baldur could feel his death coming and finally decided to tell his mother.
The Set Up
After Baldur bringing the attention to his parents odin sent his men to make all organic an inorganic things, all living creatures, animals the fish, all the trees and rocks to not harm his son Baldur. Everything had sworn except the Mistletoe but they did not see how it could hurt Baldur.
As Baldur is told the good news he decides to tell everyone and test it out and the gods decided to create a game for entertainment and throw things at Baldur to see if it hurts him.
After everyone attempted to hurt Baldur Loki followed out with his plan and shapeshifted into a woman and made fooled Hodur into shooting his brother with a enchanted mistletoe arrow. Loki then attempted to escape leaving the blame on Hodur.