Enchanted/Magic Forest Dimension

A new dimension that seems nice and sweet, but can be dark and deadly. Adding small, dangerous mobs such as snakes or a new kind of bat that can attack you, or you can tame in with a vile of blood (i.e. die with an empty bottle in your inventory to create it). You could also add a new kind of village with fairies, where they trade like villagers but for ores and tools you would find in this dimension (other crystal and geodes). There would be multiple types of trees such as coloured trees (both wood and leaves), larger sizes, or even magical trees - that you can only find in new dungeons with harder, scarier mobs - that can change a small biome in the over world.

The portal would be a combination of the nether and end portals where it would be on the ground, but could be made to any size/shape. It could be created by corse dirt, and surrounded by types of hard to gather garden materials such as wither roses, flowering azaleas and warped mushrooms (or something of the sorts). Enchanting tables on the other hand, would explode in this dimension, as it's seen as despicable by the species of that dimension. Mobs could have a slim chance of dropping bottles of enchanting as well. Wither skeletons in the nether would also drop withered bones instead of regular ones which would be how you bone meal the ground, new growable foods (e.g. blackberry bushes), or tame new kinds of animals. The ocean holds mermaids that would be good, but sirens would lure and try to drown players