diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/EcoArmorPlugin.java b/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/EcoArmorPlugin.java
index fb6f3f7..c716692 100644
--- a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/EcoArmorPlugin.java
+++ b/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/EcoArmorPlugin.java
@@ -14,6 +14,7 @@ import com.willfp.ecoarmor.display.packets.PacketSetSlot;
 import com.willfp.ecoarmor.display.packets.PacketWindowItems;
 import com.willfp.ecoarmor.effects.Effects;
 import com.willfp.ecoarmor.sets.ArmorSets;
+import com.willfp.ecoarmor.sets.util.EffectiveDurabilityListener;
 import com.willfp.ecoarmor.upgrades.advanced.AdvancementShardListener;
 import com.willfp.ecoarmor.upgrades.crystal.CrystalListener;
 import com.willfp.ecoarmor.upgrades.crystal.UpgradeCrystal;
@@ -128,7 +129,8 @@ public class EcoArmorPlugin extends AbstractEcoPlugin {
     public List<Listener> getListeners() {
         return Arrays.asList(
                 new CrystalListener(this),
-                new AdvancementShardListener(this)
+                new AdvancementShardListener(this),
+                new EffectiveDurabilityListener(this)
         );
     }
 
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/ArmorSet.java b/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/ArmorSet.java
index 5b3466f..5ff4ca1 100644
--- a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/ArmorSet.java
+++ b/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/ArmorSet.java
@@ -207,6 +207,7 @@ public class ArmorSet {
         PersistentDataContainer container = meta.getPersistentDataContainer();
         container.set(PLUGIN.getNamespacedKeyFactory().create("set"), PersistentDataType.STRING, name);
         container.set(PLUGIN.getNamespacedKeyFactory().create("tier"), PersistentDataType.STRING, "default");
+        container.set(PLUGIN.getNamespacedKeyFactory().create("effective-durability"), PersistentDataType.INTEGER, EcoArmorConfigs.SETS.getInt(name + "." + pieceName + ".effective-durability"));
         if (advanced) {
             container.set(PLUGIN.getNamespacedKeyFactory().create("advanced"), PersistentDataType.INTEGER, 1);
         }
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/util/EffectiveDurabilityListener.java b/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/util/EffectiveDurabilityListener.java
new file mode 100644
index 0000000..f67002a
--- /dev/null
+++ b/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/sets/util/EffectiveDurabilityListener.java
@@ -0,0 +1,57 @@
+package com.willfp.ecoarmor.sets.util;
+
+import com.willfp.eco.util.NumberUtils;
+import com.willfp.eco.util.internal.PluginDependent;
+import com.willfp.eco.util.plugin.AbstractEcoPlugin;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerItemDamageEvent;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.persistence.PersistentDataContainer;
+import org.bukkit.persistence.PersistentDataType;
+import org.jetbrains.annotations.NotNull;
+
+public class EffectiveDurabilityListener extends PluginDependent implements Listener {
+    /**
+     * Create new effective durability listeners.
+     *
+     * @param plugin The plugin.
+     */
+    public EffectiveDurabilityListener(@NotNull final AbstractEcoPlugin plugin) {
+        super(plugin);
+    }
+
+    /**
+     * Make durability act as effective.
+     *
+     * @param event The event to listen for.
+     */
+    @EventHandler
+    public void onDamage(@NotNull final PlayerItemDamageEvent event) {
+        ItemStack itemStack = event.getItem();
+        ItemMeta meta = itemStack.getItemMeta();
+
+        if (meta == null) {
+            return;
+        }
+
+        PersistentDataContainer container = meta.getPersistentDataContainer();
+
+        Integer effectiveDurability = container.get(this.getPlugin().getNamespacedKeyFactory().create("effective-durability"), PersistentDataType.INTEGER);
+
+        if (effectiveDurability == null) {
+            return;
+        }
+
+        int maxDurability = itemStack.getType().getMaxDurability();
+
+        double ratio = (double) effectiveDurability / maxDurability;
+
+        double chance = 1 / ratio;
+
+        if (NumberUtils.randFloat(0, 1) > chance) {
+            event.setCancelled(true);
+        }
+    }
+}
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/upgrades/crystal/CrystalListener.java b/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/upgrades/crystal/CrystalListener.java
index e38a519..17e827f 100644
--- a/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/upgrades/crystal/CrystalListener.java
+++ b/eco-core/core-plugin/src/main/java/com/willfp/ecoarmor/upgrades/crystal/CrystalListener.java
@@ -7,6 +7,7 @@ import com.willfp.ecoarmor.sets.util.ArmorUtils;
 import org.bukkit.Material;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
+import org.bukkit.event.block.BlockPlaceEvent;
 import org.bukkit.event.inventory.InventoryClickEvent;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -69,4 +70,21 @@ public class CrystalListener extends PluginDependent implements Listener {
 
         event.setCancelled(true);
     }
+
+    /**
+     * Prevents placing upgrade crystals.
+     *
+     * @param event The event to listen for.
+     */
+    @EventHandler
+    public void onPlaceCrystal(@NotNull final BlockPlaceEvent event) {
+        ItemStack item = event.getItemInHand();
+        if (item.getType() != Material.END_CRYSTAL) {
+            return;
+        }
+
+        if (ArmorUtils.getCrystalTier(item) != null) {
+            event.setCancelled(true);
+        }
+    }
 }
diff --git a/eco-core/core-plugin/src/main/resources/sets.yml b/eco-core/core-plugin/src/main/resources/sets.yml
index 62a1a4e..4b237c2 100644
--- a/eco-core/core-plugin/src/main/resources/sets.yml
+++ b/eco-core/core-plugin/src/main/resources/sets.yml
@@ -33,6 +33,7 @@ Reaper:
     leather-color: "#303030"
     name: "&cReaper Helmet"
     advanced-name: "<\$#f12711>Advanced<\$#f5af19>&c Reaper Helmet"
+    effective-durability: 2048
     lore:
       - "&c&lREAPER SET BONUS"
       - "&8» &cDeal 25% more damage"
@@ -60,6 +61,7 @@ Reaper:
     leather-color: "#303030"
     name: "&cReaper Chestplate"
     advanced-name: "<\$#f12711>Advanced<\$#f5af19>&c Reaper Chestplate"
+    effective-durability: 2048
     lore:
       - "&c&lREAPER SET BONUS"
       - "&8» &cDeal 25% more damage"
@@ -86,6 +88,7 @@ Reaper:
     material: elytra
     name: "&cReaper Elytra"
     advanced-name: "<\$#f12711>Advanced<\$#f5af19>&c Reaper Elytra"
+    effective-durability: 2048
     lore:
       - "&c&lREAPER SET BONUS"
       - "&8» &cDeal 25% more damage"
@@ -113,6 +116,7 @@ Reaper:
     leather-color: "#303030"
     name: "&cReaper Leggings"
     advanced-name: "<\$#f12711>Advanced<\$#f5af19>&c Reaper Leggings"
+    effective-durability: 2048
     lore:
       - "&c&lREAPER SET BONUS"
       - "&8» &cDeal 25% more damage"
@@ -140,6 +144,7 @@ Reaper:
     leather-color: "#303030"
     name: "&cReaper Boots"
     advanced-name: "<\$#f12711>Advanced<\$#f5af19>&c Reaper Boots"
+    effective-durability: 2048
     lore:
       - "&c&lREAPER SET BONUS"
       - "&8» &cDeal 25% more damage"
diff --git a/eco-core/core-plugin/src/main/resources/tiers.yml b/eco-core/core-plugin/src/main/resources/tiers.yml
index dac9c3a..f3a8ebd 100644
--- a/eco-core/core-plugin/src/main/resources/tiers.yml
+++ b/eco-core/core-plugin/src/main/resources/tiers.yml
@@ -100,15 +100,15 @@ netherite:
   crystal-name: "&cNetherite Upgrade Crystal"
   crystal-recipe:
     - air
-    - netherite_block
+    - netherite_ingot
     - air
 
-    - netherite_block
+    - netherite_ingot
     - ecoarmor:upgrade_crystal_diamond
-    - netherite_block
+    - netherite_ingot
 
     - air
-    - netherite_block
+    - netherite_ingot
     - air
   crystal-lore:
     - "&8Drop this onto an armor piece"