They can only be buried in a graveyard controlled by the players' team or in the team base. The bones have a slight chance of restoring that team's Avatar's slayer level and restores 50% of your prayer when buried (see Soul Wars) so that some enemies will not have the slayer requirement to kill the avatar anymore. Players that die in Soul Wars will drop one set of bones plus all of the bones they have and all soul fragments. When a game of Soul Wars ends, all of the bones in your inventory are removed, as well as barricades, explosive potion, and bandages.