Sculk dimension

There is a type portal frame in the middle of every single ancient city we should be able to light the portal and begin new story.

We should firstly light this portal with the staff of all magic which can only be obtained by defeating the Ender Wizard. The Ender Wizard can only be found in end ships The Ender Wizard has a 100% drop rate for the staff of all magic.

Once you have the staff of all magic you go to the middle of an ancient city and light the portal frame that is made of reinforced deepslate with the staff of all magic like you can light a nether portal with flint and steel.

This new dimension will have Sculk Sensors, Sculk Shriekers, Sculk Catalysts, Sculk Veins and Sculk. This dimension will also have a sculk wood this wood will be the same navy blue colour of the sculk blocks

Here's the big part

When you first come into this dimension you will be trapped on an island to fight the King of the wardens you cannot leave this island until you defeat the king of the wardens. Similar to how you cannot leave until you defeat the ender dragon. 

When one story ends another one begins

-Minecraft Story Mode