Fair drops makes Minecraft mobs more fair in terms of loots. Changing the loot tables with :
- Blazes always drop at least 1 blaze rod (up to 2)
- (Cave) spiders always drop at least 1 (up to 2) string and 1 (up to 2) spider eye
- Chickens always drop 1 to 3 feathers
- Cow always drop 1 to 3 leathers
- Endermen always drop 1 (up to 2) ender pearls
- Ghasts always drop 1 ghast tear
- Magma cubes always drop 1 magma cream.
- Phantoms always drop 1 (up to 2) phantom membranes
- Shulkers always drop 1 shulker shell
- Wither skeletons always drop 1 wither skeleton skull

Looting enchantment effects arent really changed.

Tested for 1.15

Installation :
Simply extract the zip archive into your world/datapacks folder + /reload on your Minecraft server command tool.

To change or adjust those loots, edit the .json files in :
Fair drops\data\minecraft\loot_tables\entities

Original loot tables findables here :
1) Open AppData\Roaming\.minecraft\versions\yourversion\yourversion.jar with Winrar or 7zip
2) Go into data/minecraft/loot_tables to find every vanilla loot tables
3) To reset a fair drop loot table or to make your own for a certain mob, simply copy the desired mob .json file into the datapack folder and edit it with Notepad++ for example

Enjoy, and dont hesitate to give a diamond on this datapack and to comment