diff --git a/README.md b/README.md
index f97de5b..963ab9c 100644
--- a/README.md
+++ b/README.md
@@ -1585,6 +1585,15 @@ Limites de sorts (conformance D6-D9, documentées plutôt que bricolées) :
   modélisé, S1a/S1c) : la sauvegarde partielle est désormais modélisée (panic
   à l'échec, `shaken` 1 round au succès — voir « Sauvegardes partielles » plus
   bas) ; seule la durée « 1 round/niveau » du `panicked` reste fixée à 4 rounds.
+- **Bladed Dash — approximation** (SRD spells/bladed-dash.md : « When you cast
+  this spell, you immediately move up to 30 feet in a straight line any
+  direction [...] This movement does not provoke attacks of opportunity. You
+  may make a single melee attack at your highest base attack bonus against any
+  creature you are adjacent to at any point along this 30 feet ») : le sort est
+  modélisé comme un buff de vitesse +30 ft pour 1 round ; l'attaque de mêlée
+  gratuite, le déplacement sans AoO, la contrainte de ligne droite et le bonus
+  de circonstance à l'attaque (mod d'Int ou de Cha, le plus élevé) ne sont pas
+  modélisés.
 
 ## Architecture
 
diff --git a/data/spells/bladed_dash.json b/data/spells/bladed_dash.json
index dc639dd..cdcf50e 100644
--- a/data/spells/bladed_dash.json
+++ b/data/spells/bladed_dash.json
@@ -15,5 +15,5 @@
       "duration_rounds": 1
     }
   ],
-  "description": "You move up your speed as a move action and make one melee attack at the end. Simplified as a +30 ft speed buff for 1 round; the extra attack is not modeled."
+  "description": "Upon casting, you immediately move up to 30 feet in a straight line in any direction; this movement does not provoke attacks of opportunity, and you may make a single melee attack at your highest base attack bonus against any creature you are adjacent to at any point along this 30 feet (SRD bladed dash). Simplified as a +30 ft speed buff for 1 round; the free melee attack, the no-AoO movement, the straight-line constraint and the circumstance attack bonus are not modeled."
 }