diff --git a/src/main/kotlin/io/delilaheve/AnvilEventListener.kt b/src/main/kotlin/io/delilaheve/AnvilEventListener.kt
index 828e9fd..c8a8028 100644
--- a/src/main/kotlin/io/delilaheve/AnvilEventListener.kt
+++ b/src/main/kotlin/io/delilaheve/AnvilEventListener.kt
@@ -89,8 +89,11 @@ class AnvilEventListener : Listener {
         val inventory = event.inventory as? AnvilInventory ?: return
         val output = inventory.getItem(ANVIL_OUTPUT_SLOT) ?: return
         if(!player.hasPermission(bypassPermission)){
-            if (output.findEnchantments().hasConflicts() && !player.hasPermission(requirePermission)) { return }
+            if (output.findEnchantments().hasConflicts() && !player.hasPermission(requirePermission)) {
 
+
+                return
+            }
         }
         if (event.rawSlot != ANVIL_OUTPUT_SLOT) { return }
         event.result = Event.Result.ALLOW
diff --git a/src/main/kotlin/xyz/alexcrea/group/EnchantConflictGroup.kt b/src/main/kotlin/xyz/alexcrea/group/EnchantConflictGroup.kt
new file mode 100644
index 0000000..5405ee0
--- /dev/null
+++ b/src/main/kotlin/xyz/alexcrea/group/EnchantConflictGroup.kt
@@ -0,0 +1,40 @@
+package xyz.alexcrea.group
+
+import io.delilaheve.util.ItemUtil.findEnchantments
+import org.bukkit.enchantments.Enchantment
+import org.bukkit.inventory.ItemStack
+
+class EnchantConflictGroup(val cantConflict: MaterialGroup, val minBeforeBlock: Int){
+
+    private val enchantments = HashSet<Enchantment>()
+
+    fun addEnchantment(ench: Enchantment){
+        enchantments.add(ench)
+    }
+
+    fun allow(item: ItemStack) : Boolean{
+        if(enchantments.size > minBeforeBlock){
+            return true
+        }
+        if(cantConflict.contain(item.type)){
+            return true
+        }
+        if(minBeforeBlock == 0){
+            return false
+        }
+
+        // Count the amount of enchantment that are in the list
+        var enchantAmount = 0
+        for (enchantment in item.findEnchantments().keys) {
+            if(enchantment !in enchantments) continue
+            if(++enchantAmount > minBeforeBlock){
+                return false
+            }
+
+        }
+
+        return true
+    }
+
+
+}
\ No newline at end of file
diff --git a/src/main/kotlin/xyz/alexcrea/group/ExcludeGroup.kt b/src/main/kotlin/xyz/alexcrea/group/ExcludeGroup.kt
index d12378e8..26c2f45 100644
--- a/src/main/kotlin/xyz/alexcrea/group/ExcludeGroup.kt
+++ b/src/main/kotlin/xyz/alexcrea/group/ExcludeGroup.kt
@@ -5,7 +5,6 @@ import org.bukkit.Material
 class ExcludeGroup(name: String): IncludeGroup(name) {
 
     override fun contain(mat: Material): Boolean {
-        Material.POLISHED_DIORITE
         return !super.contain(mat)
     }
 
diff --git a/src/main/kotlin/xyz/alexcrea/group/IncludeGroup.kt b/src/main/kotlin/xyz/alexcrea/group/IncludeGroup.kt
index 2b574d6..f524612 100644
--- a/src/main/kotlin/xyz/alexcrea/group/IncludeGroup.kt
+++ b/src/main/kotlin/xyz/alexcrea/group/IncludeGroup.kt
@@ -1,15 +1,17 @@
 package xyz.alexcrea.group
 
 import org.bukkit.Material
+import java.util.EnumSet
 
 open class IncludeGroup(private val name: String): MaterialGroup{
-    private val includedMaterial = HashSet<Material>()
+    private val includedMaterial = EnumSet.noneOf(Material::class.java)
     private val includedGroup = HashSet<MaterialGroup>()
 
     override fun contain(mat: Material): Boolean {
         if(mat in includedMaterial){
             return true
         }
+
         for (materialGroup in includedGroup.iterator()) {
             if(materialGroup.contain(mat)){
                 return true
diff --git a/src/main/kotlin/xyz/alexcrea/group/ItemGroupManager.kt b/src/main/kotlin/xyz/alexcrea/group/ItemGroupManager.kt
index 5a6a3e6..e56f6d4 100644
--- a/src/main/kotlin/xyz/alexcrea/group/ItemGroupManager.kt
+++ b/src/main/kotlin/xyz/alexcrea/group/ItemGroupManager.kt
@@ -12,7 +12,9 @@ class ItemGroupManager {
     companion object {
         // Path for group type
         private const val GROUP_TYPE_PATH = "type"
+        // Path for included items list
         private const val MATERIAL_LIST_PATH = "items"
+        // Path for included groups list
         private const val GROUP_LIST_PATH = "groups"
     }
 
diff --git a/src/main/resources/enchant_conflict.yml b/src/main/resources/enchant_conflict.yml
new file mode 100644
index 0000000..3370f65
--- /dev/null
+++ b/src/main/resources/enchant_conflict.yml
@@ -0,0 +1,222 @@
+# material conflicts
+#
+# If you want to edit this file:
+# - You need to take into account that multiple conflict can be applied to an item
+#   (exemple: protection can be applied to chestplate AND should not have other "protection")
+
+# These restriction are about not allowing enchantment on illegal items
+restriction_aqua_infinity:
+  enchantments: [aqua_infinity]
+  notAffectedGroups: [helmet]
+
+restriction_bane_of_arthropods:
+  enchantments: [bane_of_arthropods]
+  notAffectedGroups: [melee_weapons]
+
+restriction_blast_protection:
+  enchantments: [blast_protection]
+  notAffectedGroups: [armors]
+
+restriction_channeling:
+  enchantments: [channeling]
+  notAffectedGroups: [trident]
+
+restriction_binding_curse:
+  enchantments: [binding_curse]
+  notAffectedGroups: [wearable]
+
+restriction_vanishing_curse:
+  enchantments: [vanishing_curse]
+  notAffectedGroups: [can_vanish]
+
+restriction_depth_strider:
+  enchantments: [depth_strider]
+  notAffectedGroups: [boots]
+
+restriction_efficiency:
+  enchantments: [efficiency]
+  notAffectedGroups: [tools, shears]
+
+restriction_feather_falling:
+  enchantments: [feather_falling]
+  notAffectedGroups: [boots]
+
+restriction_fire_aspect:
+  enchantments: [fire_aspect]
+  notAffectedGroups: [swords]
+
+restriction_fire_protection:
+  enchantments: [fire_protection]
+  notAffectedGroups: [armors]
+
+restriction_flame:
+  enchantments: [flame]
+  notAffectedGroups: [bow]
+
+restriction_fortune:
+  enchantments: [fortune]
+  notAffectedGroups: [tools]
+
+restriction_frost_walker:
+  enchantments: [frost_walker]
+  notAffectedGroups: [boots]
+
+restriction_impaling:
+  enchantments: [impaling]
+  notAffectedGroups: [trident]
+
+restriction_infinity:
+  enchantments: [infinity]
+  notAffectedGroups: [bow]
+
+restriction_knockback:
+  enchantments: [knockback]
+  notAffectedGroups: [swords]
+
+restriction_looting:
+  enchantments: [looting]
+  notAffectedGroups: [swords]
+
+restriction_loyalty:
+  enchantments: [loyalty]
+  notAffectedGroups: [trident]
+
+restriction_lure:
+  enchantments: [lure]
+  notAffectedGroups: [fishing_rod]
+
+restriction_mending:
+  enchantments: [ending]
+  notAffectedGroups: [can_unbreak]
+
+restriction_multishot:
+  enchantments: [multishot]
+  notAffectedGroups: [crossbow]
+
+restriction_piercing:
+  enchantments: [piercing]
+  notAffectedGroups: [crossbow]
+
+restriction_power:
+  enchantments: [power]
+  notAffectedGroups: [bow]
+
+restriction_projectile_protection:
+  enchantments: [projectile_protection]
+  notAffectedGroups: [armors]
+
+restriction_protection:
+  enchantments: [protection]
+  notAffectedGroups: [armors]
+
+restriction_punch:
+  enchantments: [punch]
+  notAffectedGroups: [bow]
+
+restriction_quick_charge:
+  enchantments: [quick_charge]
+  notAffectedGroups: [crossbow]
+
+restriction_respiration:
+  enchantments: [respiration]
+  notAffectedGroups: [helmet]
+
+restriction_riptide:
+  enchantments: [riptide]
+  notAffectedGroups: [trident]
+
+restriction_sharpness:
+  enchantments: [sharpness]
+  notAffectedGroups: [melee_weapons]
+
+restriction_silk_touch:
+  enchantments: [silk_touch]
+  notAffectedGroups: [tools]
+
+restriction_smite:
+  enchantments: [smite]
+  notAffectedGroups: [melee_weapons]
+
+restriction_soul_speed:
+  enchantments: [soul_speed]
+  notAffectedGroups: [boots]
+
+restriction_sweeping:
+  enchantments: [sweeping]
+  notAffectedGroups: [swords]
+
+restriction_swift_sneak:
+  enchantments: [swift_sneak]
+  notAffectedGroups: [boots]
+
+restriction_thorns:
+  enchantments: [thorns]
+  notAffectedGroups: [chestplate]
+
+restriction_unbreaking:
+  enchantments: [unbreaking]
+  notAffectedGroups: [can_unbreak]
+
+# Now we have Incompatibility
+# Because we have filtered before this step, we will use nothing as notAffectedGroups
+# We can an exclude group to exclude elements of group from the conflict
+
+sword_enchant_conflict:
+  enchantments:
+    - bane_of_arthropods
+    - smite
+    - sharpness
+  notAffectedGroups: [nothing]
+  maxEnchantmentBeforeConflict: 1
+
+protection_enchant_conflict:
+  enchantments:
+    - blast_protection
+    - fire_protection
+    - projectile_protection
+    - protection
+  notAffectedGroups: [nothing]
+  maxEnchantmentBeforeConflict: 1
+
+trident_conflict1:
+  enchantments:
+    - channeling
+    - riptide
+  notAffectedGroups: [nothing]
+  maxEnchantmentBeforeConflict: 1
+
+trident_conflict2:
+  enchantments:
+    - loyalty
+    - riptide
+  notAffectedGroups: [nothing]
+  maxEnchantmentBeforeConflict: 1
+
+boot_conflict:
+  enchantments:
+    - depth_strider
+    - frost_walker
+  notAffectedGroups: [nothing]
+  maxEnchantmentBeforeConflict: 1
+
+tool_conflict:
+  enchantments:
+    - fortune
+    - silk_touch
+  notAffectedGroups: [nothing]
+  maxEnchantmentBeforeConflict: 1
+
+bow_conflict:
+  enchantments:
+    - mending
+    - infinity
+  notAffectedGroups: [nothing]
+  maxEnchantmentBeforeConflict: 1
+
+crossbow_conflict:
+  enchantments:
+    - multishot
+    - piercing
+  notAffectedGroups: [nothing]
+  maxEnchantmentBeforeConflict: 1
+
diff --git a/src/main/resources/item_groups.yml b/src/main/resources/item_groups.yml
index 095dd2c..e8a0153 100644
--- a/src/main/resources/item_groups.yml
+++ b/src/main/resources/item_groups.yml
@@ -25,3 +25,173 @@ example_exclude:
     - polished_granite
   groups:
     - example_include
+
+# Default configuration should be vanilla enchantment conflict group
+# there may have error, if you find one you can fix it !
+# https://minecraft.fandom.com/wiki/Enchanting
+
+swords:
+  type: include
+  items:
+    - wooden_sword
+    - stone_sword
+    - iron_sword
+    - diamond_sword
+    - golden_sword
+    - netherite_sword
+
+axes:
+  type: include
+  items:
+    - wooden_axe
+    - stone_axe
+    - iron_axe
+    - diamond_axe
+    - golden_axe
+    - netherite_axe
+
+melee_weapons:
+  groups:
+    - swords
+    - axes
+
+helmets:
+  type: include
+  items:
+    - leather_helmet
+    - chainmail_helmet
+    - iron_helmet
+    - diamond_helmet
+    - golden_helmet
+    - netherite_helmet
+    - turtle_helme
+
+chestplate:
+  type: include
+  items:
+    - leather_chestplate
+    - chainmail_chestplate
+    - iron_chestplate
+    - diamond_chestplate
+    - golden_chestplate
+    - netherite_chestplate
+
+leggings:
+  type: include
+  items:
+    - leather_leggings
+    - chainmail_leggings
+    - iron_leggings
+    - diamond_leggings
+    - golden_leggings
+    - netherite_leggings
+
+boots:
+  type: include
+  items:
+    - leather_boots
+    - chainmail_boots
+    - iron_boots
+    - diamond_boots
+    - golden_boots
+    - netherite_boots
+
+armors:
+  type: include
+  groups:
+    - helmets
+    - chestplate
+    - leggings
+    - boots
+
+wearable:
+  type: include
+  items:
+    - elytra
+    - carved_pumpkin
+    - skeleton_skull
+    - wither_skeleton_skull
+    - zombie_head
+    - player_head
+    - creeper_head
+    - dragon_head
+    - piglin_head
+  groups:
+    - armors
+
+tools:
+  type: include
+  items:
+    - wooden_pickaxe
+    - stone_pickaxe
+    - iron_pickaxe
+    - diamond_pickaxe
+    - golden_pickaxe
+    - netherite_pickaxe
+    - wooden_shovel
+    - stone_shovel
+    - iron_shovel
+    - diamond_shovel
+    - golden_shovel
+    - netherite_shovel
+    - wooden_hoe
+    - stone_hoe
+    - iron_hoe
+    - diamond_hoe
+    - golden_hoe
+    - netherite_hoe
+  groups:
+    - axes
+
+trident:
+  type: include
+  items:
+    - trident
+
+bow:
+  type: include
+  items:
+    - bow
+
+crossbow:
+  type: include
+  items:
+    - crossbow
+
+fishing_rod:
+  type: include
+  items:
+    - fishing_rod
+
+shears:
+  type: include
+  items:
+    - shears
+
+can_unbreak:
+  type: include
+  items:
+    - elytra
+    - flint_and_steel
+    - shield
+    - carrot_on_a_stick
+    - warped_fungus_on_a_stick
+    - brush
+  groups:
+    - melee_weapons
+    - tools
+    - armors
+    - trident
+    - bow
+    - crossbow
+    - fishing_rod
+    - shears
+
+can_vanish:
+  type: include
+  items:
+    - compass
+  groups:
+    - wearable
+    - can_unbreak
+