Kill Keep Item

Kill Keep is a mod that lets you die voluntarily while saving a row of items (9 stacks). This can be handy for escaping a fight or quickly returning home if you’re too far away.

To craft this potion, you need to combine an Echo Shard with a Potion of Harming II in a Brewing Stand.

Once you have the potion, you can store your items to keep, then die. Your items will be returned to you 30 seconds after death. If you are not alive when it's time to collect the items, they will be lost.