This is a vanilla friendly mod, that adds a Quality tier system to armor, weapons and tools. Depending on the tier, it gives the items a buff.
Tiers:
So lowest quality is "Common", highest is "Legendary".
Examples of buffs are:
Swords: + attack damage. Tools: + block break speed. Armor: + 25% armor.
This mod is in its starting phase, so it might not be compatible with other mods that modify item attributes.
Feel free to use this in your modpack, though do NOT upload it to any other sites.