EnchantLimiter

Some servers wish to limit the enchants that are available to players. This plugin allows them to.

Supported Enchantments:
Swords:
- Sharpness
- Fire Aspect
- Knockback
Armour:
- Protection
- Fire Protection
- Projectile Protection
- Thorns
Bows:
- Power
- Flame
- Punch

Functionality

• If there is an existing item with an enchant which is not allowed with this plugin, it will be scaled down.
  
• Players will not be able to enchant an item above the specified levels in the config file
  

Unfortunately there is no API functionality to disable combining on anvils. However once the items are made they will be scaled down, so no worries there.

To do

• Add functionality for other enchantments
  
• Ensure the configuration reloading command actually works.
  
• Bug - if too many enchants are disabled and someone tries to enchant, it will sometimes not enchant an item but take the levels of XP.
  

Source