nebulus trees and portals

This mod adds nebulus trees and portals. 

The seven trees can you find in the following biomes:

• Birch Forest
• Cherry Grove
• Dark Forest
• Taiga
• Forest
• Jungel
• Savanna

Here you can find the the portals:

• You can find them during adventures at the overworld and the nether.

More features:

• All of them have there own individual character.
• You can obtain loot from the portal chests.
• You can use the portal to travel in the nether.