diff --git a/data/pcs/misty.json b/data/pcs/misty.json
index 3979722..22012fb 100644
--- a/data/pcs/misty.json
+++ b/data/pcs/misty.json
@@ -128,6 +128,7 @@
   }
  ],
  "source": "fiches_personnages/misty_sheet.json",
+ "notes": "Traits : 'Born Damned' est un no-op documenté (+2 sauvegardes vs malédictions, descripteur 'curse' absent du moteur) ; 'Axe to Grind' est un no-op documenté (+1 dégâts vs ennemi menacé seulement par soi, condition non exprimable).",
  "features": [
   "Harmonic Spell",
   "Weapon Finesse",
diff --git a/src/pf1e_simulator/abilities.py b/src/pf1e_simulator/abilities.py
index d69500e..f7d3c99 100644
--- a/src/pf1e_simulator/abilities.py
+++ b/src/pf1e_simulator/abilities.py
@@ -259,11 +259,17 @@ WEAPON_FINESSE = AbilitySpec(
     effects=(StatModifier(target="attack", value=0, condition="weapon_finesse"),),
 )
 
-# Axe to Grind: +1 trait bonus on damage with axes
+# Axe to Grind (Basic Combat trait, APG): "+1 trait bonus on damage against
+# foes who are threatened by only you." The "threatened by only you" gate
+# needs the target's threat map at damage-modifier resolution time, which the
+# StatModifier condition system does not carry (conditions are evaluated from
+# weapon/range/save-descriptor context only) -> documented traced no-op. The
+# previous "+1 damage with axes, condition='axe'" was the wrong effect (the
+# SRD bonus is not tied to wielding an axe at all).
 AXE_TO_GRIND = AbilitySpec(
     name="Axe to Grind",
     category="trait",
-    effects=(StatModifier(target="damage", value=1, condition="axe"),),
+    source_detail="trait (not modeled: +1 damage vs foes threatened only by you)",
 )
 
 # Spell Vulnerability (divination): -2 penalty on saves vs divination
@@ -276,13 +282,16 @@ SPELL_VULNERABILITY_DIVINATION = AbilitySpec(
     ),
 )
 
-# Born Damned (tiefling): darkness 1/day, +2 on saves vs poison
+# Born Damned (Race trait, Tiefling): "You gain a +2 trait bonus on saving
+# throws against curses and magical effects that produce curses." The engine
+# has no "curse" save descriptor (curses are not modeled as spell effects),
+# so the bonus has nothing to gate on -> documented traced no-op. The
+# previous "+2 Fort vs poison" was the wrong effect (poison is not a curse).
+# The tiefling darkness 1/day SLA is likewise not modeled.
 BORN_DAMNED = AbilitySpec(
     name="Born Damned (race: tiefling)",
     category="racial",
-    effects=(
-        StatModifier(target="fort", value=2, condition="poison"),
-    ),
+    source_detail="racial (not modeled: +2 saves vs curses; no curse descriptor)",
 )
 
 # Gifted Adept: +1 caster level for one spell
diff --git a/tests/test_conditional_modifiers.py b/tests/test_conditional_modifiers.py
index a83252e..d697b3b 100644
--- a/tests/test_conditional_modifiers.py
+++ b/tests/test_conditional_modifiers.py
@@ -9,7 +9,8 @@ Then:   the modifier applies only when the runtime condition holds;
 Supported condition families (plan B1):
 - ``target_within_30ft_ranged`` — ranged-style weapon (or touch with
   increment) fired at a target within 30 ft (Point-Blank Shot).
-- ``axe`` — wielded weapon whose name contains "axe" (Axe to Grind).
+- ``axe`` — wielded weapon whose name contains "axe" (engine capability; the
+  real Axe to Grind trait is a documented no-op, see test_feats.py).
 - save descriptors (fear, cold, electricity, fey, divination, poison,
   disease, mind_affecting) — the saving throw's context, threaded from the
   fear aura and from spell effects/schools (Bitter, Lonely, Breeze-Kissed,
@@ -27,7 +28,6 @@ from typing import Literal
 import pytest
 
 from pf1e_simulator.abilities import (
-    AXE_TO_GRIND,
     BITTER,
     BORN_DAMNED,
     BREEZE_KISSED,
@@ -190,9 +190,16 @@ def test_point_blank_shot_inactive_for_melee_weapons() -> None:
     assert t.hp == 17  # damage 3, no +1
 
 
-def test_axe_to_grind_applies_to_axe_weapon() -> None:
-    """Axe to Grind: +1 damage with a weapon whose name contains 'axe'."""
-    hero = make_combatant("hero", weapon_name="Battleaxe", features=(AXE_TO_GRIND,))
+_AXE_DAMAGE_PROBE = AbilitySpec(
+    name="Axe Damage Probe",
+    category="feat",
+    effects=(StatModifier(target="damage", value=1, condition="axe"),),
+)
+
+
+def test_axe_condition_applies_to_axe_weapon() -> None:
+    """Engine 'axe' condition: +1 damage with a weapon whose name contains 'axe'."""
+    hero = make_combatant("hero", weapon_name="Battleaxe", features=(_AXE_DAMAGE_PROBE,))
     foe = make_combatant("foe", ac_total=16, hp=20)
     a = make_state(hero, "players", (1, 1))
     t = make_state(foe, "monsters", (1, 2))
@@ -202,9 +209,9 @@ def test_axe_to_grind_applies_to_axe_weapon() -> None:
     assert t.hp == 16  # 3 + 1 (axe)
 
 
-def test_axe_to_grind_inactive_without_axe() -> None:
-    """Axe to Grind: no bonus when the weapon is not an axe."""
-    hero = make_combatant("hero", weapon_name="Shortsword", features=(AXE_TO_GRIND,))
+def test_axe_condition_inactive_without_axe() -> None:
+    """Engine 'axe' condition: no bonus when the weapon is not an axe."""
+    hero = make_combatant("hero", weapon_name="Shortsword", features=(_AXE_DAMAGE_PROBE,))
     foe = make_combatant("foe", ac_total=16, hp=20)
     a = make_state(hero, "players", (1, 1))
     t = make_state(foe, "monsters", (1, 2))
@@ -227,7 +234,6 @@ def test_axe_to_grind_inactive_without_axe() -> None:
         (FEY_TOUCHED, "will", 19, frozenset({"fey"})),
         (HALF_FORGOTTEN_SECRETS, "fort", 20, frozenset({"disease"})),
         (HALF_FORGOTTEN_SECRETS, "will", 20, frozenset({"mind_affecting"})),
-        (BORN_DAMNED, "fort", 20, frozenset({"poison"})),
         (PINGRE, "fort", 19, frozenset({"poison"})),
     ],
 )
diff --git a/tests/test_feats.py b/tests/test_feats.py
index d3ee9ac..9dd8d51 100644
--- a/tests/test_feats.py
+++ b/tests/test_feats.py
@@ -12,6 +12,8 @@ import json
 from pathlib import Path
 
 from pf1e_simulator.abilities import (
+    AXE_TO_GRIND,
+    BORN_DAMNED,
     COMBAT_REFLEXES,
     EXALTED_SOCIETY,
     FORTIFIED_DRINKER,
@@ -253,3 +255,20 @@ def test_fortified_drinker_is_inert_documented_noop() -> None:
     poison, condition='alcohol'" modifier is gone)."""
     assert FORTIFIED_DRINKER.effects == ()
     assert "not modeled" in FORTIFIED_DRINKER.source_detail
+
+
+def test_born_damned_is_inert_documented_noop() -> None:
+    """SRD (Tiefling race trait): +2 trait bonus on saves against curses. No
+    'curse' save descriptor exists -> inert no-op (old +2 Fort vs poison was
+    the wrong bonus entirely)."""
+    assert BORN_DAMNED.effects == ()
+    assert "not modeled" in BORN_DAMNED.source_detail
+
+
+def test_axe_to_grind_is_inert_documented_noop() -> None:
+    """SRD (APG combat trait): +1 trait bonus on damage against foes
+    threatened by only you. The threat-map gate is not expressible in the
+    StatModifier condition system -> inert no-op (old +1 damage with axes was
+    the wrong effect; the SRD bonus is not tied to axes)."""
+    assert AXE_TO_GRIND.effects == ()
+    assert "not modeled" in AXE_TO_GRIND.source_detail