Hashs's Enchantment Enchiridion is a relatively small pack I made to play around with 1.21's new custom enchantment support. It adds 8 new enchantments (3 treasure, 3 normally obtainable, and 2 curses).

Treasure enchantments:
- Colossus: increases your size, reach, and knockback resistance. Applicable to chestplates
- Antigrav: reduces gravity and fall damage. Applicable to boots; only obtainable from end cities
- Architects' Finesse: increases block placement reach. 3 levels. Applicable to helmets; only obtainable from villagers

Normal enchantments:
- Arcane Protection: protection from magic damage like potions, exactly as it says on the tin. 4 levels. Incompatible with other Protections.
- Slaying: bonus damage against mobs with 30+ max HP, increased further against bosses. 5 levels. Applicable to melee weapons, natural to swords, incompatible with other melee damage enchantments i.e. Sharpness
- Beheading: bonus damage against mobs that have corresponding heads, as well as their environmental variants, with a chance to drop said head. Includes players and dragons! 5 levels. Applicable to melee weapons, natural to axes, incompatible with other melee damage enchants i.e. Sharpness

Curses:
- Curse of Constraint: reduces reach. Occurs on tools and melee weapons.
- Curse of Crumbling: doubles durability damage. Occurs on anything with durability.