Useful Slime Add-on
Useful Slime is Add-on that adds tools to reduce fall damage, launch yourself across long distances, and discover floating islands, making survival gameplay faster, safer, and more fun.
Features:
Slime Boots
It is a boots that remove fall damage when worn and gives player a jump according to distance he fell from.
And if you want to stop jumping just do a shift (but you will take fall damage).
Slime Sling
It's a tool that give you a push back with force and direction depending on direction of player's head and force of charge.
You can use it to travel long distances.

Slime Island
It's a slime island floating in sky where you can find slime. It's located at y = 140 - 160 and is randomly distributed around world. You can find it approximately every 2000 blocks.
You can kill slime on it to get a slime ball and break trees on it to get green slime and use them to make slime boots and slime sling.

You can break leaves of slime tree to get slime tree saplings and plant them anywhere (It can only be grown on slime grass and slime dirt. and You can make it grow quickly by using Bone Meal on it).

Crafting Recipes
Slime Boots Crafting
Slime Sling Crafting
Slime Ball Crafting
Installation
- Install resource pack and behaviour pack
- Make sure Beta APIs are enabled (without them Add-on will not work)

Showcase
Downloads
Useful Slime Add-on
Download for your Minecraft version.