In Norse mythology, the death of Baldur is a significant event that marks the beginning of the end for the gods. Baldur, the son of Odin and Frigg, is known for his beauty and goodness. His death is prophesied, leading to a series of events that ultimately contribute to Ragnarök, the end of the world in Norse beliefs. Loki, the trickster god, plays a crucial role in Baldur's demise. He deceives Hodr, Baldur's blind brother, into killing him with a mistletoe arrow, the only substance that can harm Baldur. This act of betrayal leads to immense grief among the gods and sets off a chain reaction of events that alters the fate of the cosmos.