I believe the reason is that they are going to implement a weight limit system in the next generation in order to promote the fight against childhood obesity, after all, if you don't lose weight, you take more damage from grass knot.
Even then one of the Gems would be a better choice.i cant see it as being useful unless if you're playing by the item clause and can't find another item to give to your pokemon.
Because that 4x resisted Grass Knot was doing so much damage. No, but this is obviously a useless item. Even Mail is better, because at least it can't be TrickedLight Metal Pumice Stone Scizor.
FUCK YOU GRASS KNOT
So much win in one comment.Even Mail is better, because at least it can't be Tricked
Even then I'd say Chople Berry would be better and effectively reduce the damage by the same amount (I think)Maybe somewhere in the depths on UU, weight matters, maybe with Aggron or something vs. Weavile. Almost no use in OU at all though.
...Is no one else going to question how the fuck a STONE makes you LIGHTER?
Pretty much useless, not worth switching other useful items for it, same goes with Light Metal, not sure which Pokemon gets is besides Metagross, but I'd use Clear Body Metagross over Light Metal any day.
...Is no one else going to question how the fuck a STONE makes you LIGHTER?