i can't find any explanation on what the enchant does lol

i'm hosting a server and modpack and people keep asking me on what the enchantment does and i have no idea

It reduces knockback. Your players can find descriptions for all enchantments and augments in my mod by either installing Enchantment Description, or by looking at the Enchantments or Augments sections of the Glistering Tome patchouli book.