New Biome Idea : The Dwarfed Forest

I have an idea for a new biome, that when you enter, everything get's bigger. Well, it seems that way to the player, when really, their scale AND health get's halved, and the effects still apply even if they leave the forest! The only way to get the scale back to normal is by finding the dwarfed mushroom, that can only be found in the mushed dungeon that can only generate in the biome, with a limit of 5 per biome. The dungeon will be challenging, and will always have the growing room, which contains the mushroom, and the only way to get more of them, dwarfed moss, which when bonemealed will grow the shroom, and spread. The forest will be mythical, and spooky, having many new luminescent blocks and a new wood(of course, new tree, high chance of new wood), with a dense fog appearing once you enter. The bark would have a dark blue-purple hue and the wood it's self would have a milk-chocolatey color that's slightly darkened. The leaves would be spacy colors and have a maple leaf shape. The grass would be a dark blue-green and foxes would have a high spawn rate. At night the forest would actually be the safest, and that would please most players. I really think that the overworld is missing out on the wonder and the mystic touch that the nether and the end have, so a biome to make the overworld a bit more mystical would be a nice touch, and add to the hazardous side of the Wild update.