This magic item spontaneously appears on high shelves just out of a characters reach whenever they are in a home's garage, storage shed, or a horse stable. A player who sees it must make a DC 10 saving throw or attempt to get it and drink it. When poured on plants it deals 30d6 necrotic damage and permanently removes their ability to heal even by magical means. If a player drinks it, they explode. Tough luck buddy.

DM: You find yourself in your uncles storage shed where he keeps the horses and gardening equipment as a brightly colored bottle of what looks like halloween themed candy with a skull on the label catches your eye.

Player (New idiot who believed the evil DM was actually nice): I get a steppie stool and reach it before chugging it dry.

DM: You spontaneously combust as well as killing your Uncle Jerry's potato farm.

Player: Well that isn't very good.