Making a modded helmet! Terraria, 2019, UPDATED!

using Microsoft.Xna.Framework;
using Terraria;
using Terraria.ID;
using Terraria.ModLoader;
using static Terraria.ModLoader.ModContent;

namespace TestMod.Items.Armor
{
    [AutoloadEquip(EquipType.Head)]
    public class ModdedHelmet : ModItem
    {
        public override void SetStaticDefaults()
        {
            Tooltip.SetDefault("This helmet is Modded.");
        }

        public override void SetDefaults()
        {
            item.width = 18;
            item.height = 18;
            item.value = 1;
            item.rare = 2;
            item.defense = 5;
        }

        public override bool IsArmorSet(Item head, Item body, Item legs)
        {
            return body.type == mod.ItemType("ModdedChestplate") && legs.type == mod.ItemType("ModdedLeggings");
        }

        public override void UpdateArmorSet(Player player)
        {
            player.meleeDamage *= 0.5f;
            player.AddBuff(BuffID.Spelunker, 1);
        }

        public override void AddRecipes()
        {
            ModRecipe recipe = new ModRecipe(mod);
            recipe.AddIngredient(ItemID.DirtBlock, 10);
            recipe.SetResult(this);
            recipe.AddRecipe();
        }
    }
}