Custom Tiers The custom tier event is a startup event. You can make custom tiers for armor and tools in a startup script. They are not reloadable without restarting the game. The events are not cancellable. Tool tiers ItemEvents.toolTierRegistry(event => { event.add('tier_id', tier => { tier.uses = 250 tier.speed = 6.0 tier.attackDamageBonus = 2.0 tier.level = 2 tier.enchantmentValue = 14 tier.repairIngredient = '#forge:ingots/iron' }) }) Armor tiers ItemEvents.armorTierRegistry(event => { event.add('tier_id', tier => { tier.durabilityMultiplier = 15 // Each slot will be multiplied with [13, 15, 16, 11] tier.slotProtections = [2, 5, 6, 2] // Slot indicies are [FEET, LEGS, BODY, HEAD] tier.enchantmentValue = 9 tier.equipSound = 'minecraft:item.armor.equip_iron' tier.repairIngredient = '#forge:ingots/iron' tier.toughness = 0.0 // diamond has 2.0, netherite 3.0 tier.knockbackResistance = 0.0 }) })