Frigg gets all of the elements to swear that nothing will harm him. Loki leaves the stoning, changes into a an old woman. Loki goes to the bush, sharpens one of the branches, returns, and guides Hod to throw the dart and kills Balder. Hel tells him that all must mourn him. Loki, disguised as a monster, doesn't mourn him, and Balder stays down in lower world until Ragnarok.
Notes suggest correlation between seasons.