Attribute-inverting Field Spell

[UnmagicMushroom]

I don't really post many of my own ideas here (okay I've only posted 1 set which got no responses hahaha), but I don't often find inspiration to create these days. This is an idea that I had just this afternoon - whether it's been done before of whether it already exists is anyone's guess to me:


Photonegative Landscape
[Field Spell]
As long as this card remains face-up on the field, for each monster in play, treat every LIGHT monster as DARK, every FIRE monster as WATER and every EARTH monster as WIND and
vice versa.


The "thought":
This is a pretty random and simple idea, but this could be quite a frustrating card to have in play for your opponent if played opportunely (and maybe for yourself even). Really, the effects of cards that target certain attributes will be diverted elsewhere (think Little Chimera as a random example). Also, cards which state "Remove 2 LIGHT monsters in your Graveyard from play to blah blah effect" or something similar, now all of a sudden you will have to find 2 otherwise DARK monsters for this effect to be activated now. And there are plenty other examples - but most people here know the game TONS better than I do anyway.
So yeah, that's it.