#Item in question, with the offhand damage removed
ItemJupiterWeaponLightingSword:
  Id: netherite_sword
  Model: 1000001
  Data: 0
  Display: '&6Jupiter Lighting Sword'
  Attributes:
    MainHand:
      Damage: 13
      AttackSpeed: -0.3
  Hide:
  - ATTRIBUTES
  Lore:
  - '&8-----------------------------'
  - '&eBasic Stats&7:'
  - '&7&lMainHand Damage&7: &c13'
  - '&7&lAttack Speed&7: &a-0.30'
  - '&7&lLighting Strike&7: &a10 &7DMG Chance &a20%'
  - '&8-----------------------------'
  Enchantments:
  #- DAMAGE_UNDEAD:6
  Options:
    Repairable: true
  Skills:
  - skill{s=GodJupiterSwordLighting} @self ~onAttack 0.2