How do I change item attributes?

[flameyyf]

Im trying to make a Netherite Sword that has a slower attack speed but more damage how would I do that?

 

[Besotted]

Do you need to give this item in a Skript? Because otherwise, you could do this with a item-edit plugin or even in game, although a bit tougher then.

 

[HeliumBoi]

If you have SkBee, try this method.

command /customsword:
    trigger:
        set {_item} to netherite sword

        apply attribute modifier to {_item}:
            id: "minecraft:attack_damage"
            attribute: attack damage
            amount: 15.0
            operation: add_number
            slot: mainhand_slot_group

        apply attribute modifier to {_item}:
            id: "minecraft:attack_speed"
            attribute: attack speed
            amount: -3.5
            operation: add_number
            slot: mainhand_slot_group

        give player {_item}