When you die with this datapack, you get resistance 2 and regeneration 2 until you pick up an item, and for 30 seconds after. This can help protect you in some situations, for example if there are mobs or players near your bed. It also helps prevent spawn traps on servers, although it will not completely remove them.

You can change the effects the datapack gives if you need something else for a server or survival world. It does not work with /give commands.