This plugin has been tested on 1.21.11 and confirms support for every version in 1.21, older/newer versions might work but havent been tested.
Grass becomes deadly….. Whenever you step on grass blocks, you instantly die. Doesnt matter if youre in creative, spectator, have health boost 255, resistance 255, you'll instantly die ;).. you can toggle if you want it active or not.. good luck!
