Hello my idea is a mystical magical ravine. It would generate near/by spruce and snowy biomes and add tons of new blocks and features to minecraft including a new weapon.
This biome would have a main theme of purple because I think purple has a very warm and mystical feel to it if used right. The trees(not yet named) would grow off the walls, have purple glowing leaves, dark bark, and white planks able to be dyed. Butterflies would be added, new green leafy plants for the caterpillars to munch on, flowering vines, and a new flower type that would cause hallucinations. Crystal blue water falls would come down the sides and lots of lush green grass and moss.
The caterpillars the size of silver fish are friendly unless hit and then they will release poison. The cocoon cycle will last the time of the moon cycle. When the butterfly emerges it will release a drop of meconium(similar to chickens dropping eggs) once. Add it to your armor to make it emite light. Butterflies are the size of phantoms.
This biome has a new boss. The drop is a wand that has an attack range of 15 blocks and gives as much/more damage as/than a netherite sword. The boss would be an old rock guardian with slow movements but have a lot of hearts and give powerful punches. To beat it you would need a netherite sword and armor set. It doesnt attack until awakened from sleeping. This idea could also be made into a dimension. Thanks for listening!