diff --git a/hwe/sammo/ActionItem/che_숙련_동작.php b/hwe/sammo/ActionItem/che_숙련_동작.php
new file mode 100644
index 00000000..60e6084d
--- /dev/null
+++ b/hwe/sammo/ActionItem/che_숙련_동작.php
@@ -0,0 +1,20 @@
+<?php
+namespace sammo\ActionItem;
+use \sammo\iAction;
+use \sammo\General;
+
+class che_숙련_동작 extends \sammo\BaseItem{
+
+    protected $rawName = '동작';
+    protected $name = '동작(숙련)';
+    protected $info = '숙련 +15%';
+    protected $cost = 200;
+    protected $consumable = false;
+
+    public function onCalcStat(General $general, string $statName, $value, $aux=null){
+        if($statName == 'addDex'){
+            return $value * 1.15;
+        }
+        return $value;
+    }
+}
\ No newline at end of file
diff --git a/hwe/sammo/General.php b/hwe/sammo/General.php
index 8b359ec4..d00912ca 100644
--- a/hwe/sammo/General.php
+++ b/hwe/sammo/General.php
@@ -536,6 +536,7 @@ class General implements iAction
         }
 
         $dexType = "dex{$armType}";
+        $exp = $this->onCalcStat($this, 'addDex', $exp, ['armType'=>$armType]);
 
         $this->increaseVar($dexType, $exp);
     }