[Fix] Name & add meta

Assets/Scripts/Modifiers/Definition/Effect.cs

@@ -0,0 +1,23 @@
+using Cysharp.Threading.Tasks;
+using UnityEngine;
+using YachtDice.Modifiers.Core;
+using YachtDice.Modifiers.Runtime;
+
+namespace YachtDice.Modifiers.Definition
+{
+    public abstract class Effect : ScriptableObject, IEffect
+    {
+        [SerializeField] private ModifierPhase phase = ModifierPhase.Additive;
+        [SerializeField] private int priority;
+
+        public ModifierPhase Phase => phase;
+        public int Priority => priority;
+
+        public abstract UniTask Apply(ModifierContext context, ModifierInstance instance);
+
+#if UNITY_EDITOR
+        public void SetPhaseForTest(ModifierPhase p) => phase = p;
+        public void SetPriorityForTest(int p) => priority = p;
+#endif
+    }
+}