diff --git a/build.gradle.kts b/build.gradle.kts
index 0dacf7a..86662c2 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -37,7 +37,7 @@ allprojects {
     }
 
     dependencies {
-        compileOnly("com.willfp:eco:6.72.0")
+        compileOnly("com.willfp:eco:6.73.0")
         compileOnly("org.jetbrains:annotations:23.0.0")
         compileOnly("org.jetbrains.kotlin:kotlin-stdlib:1.9.20")
         compileOnly("com.github.ben-manes.caffeine:caffeine:3.1.5")
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoitems/EcoItemsPlugin.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoitems/EcoItemsPlugin.kt
index ad87c47..30698b6 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoitems/EcoItemsPlugin.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoitems/EcoItemsPlugin.kt
@@ -3,6 +3,7 @@ package com.willfp.ecoitems
 import com.willfp.eco.core.command.impl.PluginCommand
 import com.willfp.eco.core.display.DisplayModule
 import com.willfp.eco.core.items.Items
+import com.willfp.eco.core.items.tag.CustomItemTag
 import com.willfp.ecoitems.commands.CommandEcoItems
 import com.willfp.ecoitems.display.ItemsDisplay
 import com.willfp.ecoitems.display.RarityDisplay
@@ -11,6 +12,7 @@ import com.willfp.ecoitems.items.EcoItems
 import com.willfp.ecoitems.items.EcoItemsRecipes
 import com.willfp.ecoitems.items.ItemAttributeListener
 import com.willfp.ecoitems.items.ItemListener
+import com.willfp.ecoitems.items.ecoItem
 import com.willfp.ecoitems.libreforge.ConditionHasEcoItem
 import com.willfp.ecoitems.rarity.ArgParserRarity
 import com.willfp.ecoitems.rarity.Rarities
@@ -31,6 +33,9 @@ class EcoItemsPlugin : LibreforgePlugin() {
 
     override fun handleEnable() {
         Items.registerArgParser(ArgParserRarity)
+        Items.registerTag(CustomItemTag(this.createNamespacedKey("item")) {
+            it.ecoItem != null
+        })
 
         Conditions.register(ConditionHasEcoItem)
 
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoitems/rarity/Rarity.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoitems/rarity/Rarity.kt
index 280dec5..03eb51b 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoitems/rarity/Rarity.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/ecoitems/rarity/Rarity.kt
@@ -3,6 +3,7 @@ package com.willfp.ecoitems.rarity
 import com.willfp.eco.core.config.interfaces.Config
 import com.willfp.eco.core.display.Display
 import com.willfp.eco.core.items.Items
+import com.willfp.eco.core.items.tag.CustomItemTag
 import com.willfp.eco.core.recipe.parts.EmptyTestableItem
 import com.willfp.eco.core.registry.KRegistrable
 import com.willfp.ecoitems.EcoItemsPlugin
@@ -23,6 +24,14 @@ class Rarity(
 
     val displayLore = lore.map { Display.PREFIX + it }
 
+    val tag = CustomItemTag(plugin.createNamespacedKey(id)) {
+        it.ecoItemRarity == this
+    }
+
+    init {
+        Items.registerTag(tag)
+    }
+
     fun matches(item: ItemStack): Boolean {
         return items.any { it.matches(item) }
     }