Elingo's Totem of Dying Addon
This addon adds a second totem, which is the exact opposite of the Totem of Undying, as it will kill you instantly when used.
Totem of Dying
How do I get the Totem of Dying?
Just go and find your local pillager outpost. In every outpost chest, there should be a Totem of Dying.
How does it work?
All you have to do is right-click while holding the Totem of Dying, and you're dead.