Rifts in the Sift that Teleport us to Overworld

In the Overworld there are rift portals that take us to the Sift. However, there should be rifts in the Sift that take us to the Overworld. These portals take us to new, random Overworld locations that each have a different unique boss that is specific to the location.

For instance, a rift portal in the Sift can take us to the Badlands Biome, and at the end we battle a Necromancer (Minecraft Dungeons I concept). Another example, we enter a rift and it takes us to a random generated pale oak biome, and we battle a Creaking. Overall, please be creative, we need to feel excited about entering dungeons, rifts, and ravines in the game.