diff --git a/Assets/_Project/Abilities/Ability_WarriorCone.asset b/Assets/_Project/Abilities/Ability_WarriorCone.asset
new file mode 100644
index 000000000..1b4283772
--- /dev/null
+++ b/Assets/_Project/Abilities/Ability_WarriorCone.asset
@@ -0,0 +1,24 @@
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+  m_Name: Ability_WarriorCone
+  m_EditorClassIdentifier: ProjectM.Authoring::ProjectM.Authoring.AbilityDefinition
+  Id: 4
+  Archetype: 2
+  DisplayName: Warrior Cone
+  Damage: 22
+  ProjectileSpeed: 0
+  Range: 2.2
+  AutoTargetRange: 0
+  AutoTargetConeDegrees: 65
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diff --git a/Assets/_Project/Abilities/Ability_WarriorCone.asset.meta b/Assets/_Project/Abilities/Ability_WarriorCone.asset.meta
new file mode 100644
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diff --git a/Assets/_Project/Subscenes/Gameplay.unity b/Assets/_Project/Subscenes/Gameplay.unity
index fa5e8d698..b474b9d11 100644
--- a/Assets/_Project/Subscenes/Gameplay.unity
+++ b/Assets/_Project/Subscenes/Gameplay.unity
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diff --git a/Assets/_Project/Tests/EditMode/ClassTraitsTests.cs b/Assets/_Project/Tests/EditMode/ClassTraitsTests.cs
new file mode 100644
index 000000000..f18471bec
--- /dev/null
+++ b/Assets/_Project/Tests/EditMode/ClassTraitsTests.cs
@@ -0,0 +1,65 @@
+using NUnit.Framework;
+using ProjectM.Simulation;
+using Unity.Collections;
+using Unity.Entities;
+
+namespace ProjectM.Tests
+{
+    /// <summary>
+    /// Slice 2 — the pure class mapping: which Fire ability each class gets, and that the DRG-asymmetric trait
+    /// seeds fold the right direction (Warrior = melee bruiser / tankier / slower; Ranger = ranged / faster /
+    /// squishier + a wider auto-assist co-op hook), all on the reserved <see cref="Tuning.ClassSourceId"/> range.
+    /// </summary>
+    public class ClassTraitsTests
+    {
+        static DynamicBuffer<StatModifier> SeededBuffer(World world, byte classId)
+        {
+            var em = world.EntityManager;
+            var e = em.CreateEntity();
+            em.AddBuffer<StatModifier>(e);
+            var ecb = new EntityCommandBuffer(Allocator.Temp);
+            ClassTraits.AppendSeeds(classId, e, ecb);
+            ecb.Playback(em);
+            ecb.Dispose();
+            return em.GetBuffer<StatModifier>(e);
+        }
+
+        [Test]
+        public void AbilityFor_And_Normalize_DefaultToWarrior()
+        {
+            Assert.AreEqual((byte)AbilityId.WarriorCone, ClassTraits.AbilityFor(ClassTraits.WarriorClass));
+            Assert.AreEqual((byte)AbilityId.Primary, ClassTraits.AbilityFor(ClassTraits.RangerClass));
+            Assert.AreEqual((byte)AbilityId.WarriorCone, ClassTraits.AbilityFor(0), "unknown class -> Warrior cone");
+            Assert.AreEqual(ClassTraits.WarriorClass, ClassTraits.Normalize(0));
+            Assert.AreEqual(ClassTraits.WarriorClass, ClassTraits.Normalize(99));
+            Assert.AreEqual(ClassTraits.RangerClass, ClassTraits.Normalize(ClassTraits.RangerClass));
+        }
+
+        [Test]
+        public void Warrior_Seeds_Buff_Melee_And_Tankiness_And_Slow()
+        {
+            using var world = new World("ClassTraitsWarrior");
+            var mods = SeededBuffer(world, ClassTraits.WarriorClass);
+            Assert.AreEqual(4, mods.Length, "Warrior seeds 4 trait modifiers.");
+            Assert.Greater(StatMath.Apply(10f, StatTarget.MeleeDamage, mods), 10f, "Warrior hits harder in melee.");
+            Assert.Greater(StatMath.Apply(2.6f, StatTarget.MeleeRange, mods), 2.6f, "Warrior reaches further in melee.");
+            Assert.Less(StatMath.Apply(5f, StatTarget.MoveSpeed, mods), 5f, "Warrior moves slower.");
+            Assert.Greater(StatMath.Apply(100f, StatTarget.MaxHealth, mods), 100f, "Warrior is tankier.");
+            for (int i = 0; i < mods.Length; i++)
+                Assert.GreaterOrEqual(mods[i].SourceId, Tuning.ClassSourceId, "class seeds use the reserved SourceId range.");
+        }
+
+        [Test]
+        public void Ranger_Seeds_Buff_Range_Speed_Assist_And_Leave_Melee_Weak()
+        {
+            using var world = new World("ClassTraitsRanger");
+            var mods = SeededBuffer(world, ClassTraits.RangerClass);
+            Assert.AreEqual(4, mods.Length, "Ranger seeds 4 trait modifiers.");
+            Assert.Greater(StatMath.Apply(5f, StatTarget.MoveSpeed, mods), 5f, "Ranger moves faster.");
+            Assert.Less(StatMath.Apply(100f, StatTarget.MaxHealth, mods), 100f, "Ranger is squishier.");
+            Assert.Greater(StatMath.Apply(20f, StatTarget.Range, mods), 20f, "Ranger has longer projectile range.");
+            Assert.Greater(StatMath.Apply(0f, StatTarget.AutoTargetRange, mods), 0f, "Ranger has a wider auto-assist (the co-op hook).");
+            Assert.AreEqual(10f, StatMath.Apply(10f, StatTarget.MeleeDamage, mods), 0.001f, "Ranger melee is unbuffed (weaker than the Warrior).");
+        }
+    }
+}
diff --git a/Assets/_Project/Tests/EditMode/ClassTraitsTests.cs.meta b/Assets/_Project/Tests/EditMode/ClassTraitsTests.cs.meta
new file mode 100644
index 000000000..c6d8041f9
--- /dev/null
+++ b/Assets/_Project/Tests/EditMode/ClassTraitsTests.cs.meta
@@ -0,0 +1,2 @@
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