diff --git a/core/prompt_engine.py b/core/prompt_engine.py
index 9554f2f..069cfa3 100644
--- a/core/prompt_engine.py
+++ b/core/prompt_engine.py
@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import random
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, List, Optional, Tuple
 
 
 def _pick(arr: Any, fallback: str = "") -> str:
@@ -14,33 +14,57 @@ def _join_nonempty(parts: List[str]) -> str:
     return ", ".join([p.strip() for p in parts if p and p.strip()])
 
 
+def _select_custom_intro(
+    world: Dict[str, Any],
+    mode: str = "auto",
+    index: Optional[int] = None,
+) -> str:
+    ci = world.get("CUSTOM_INTRO")
+    if not isinstance(ci, dict) or not ci:
+        return ""
+
+    # Normalizza keys/values in stringhe
+    keys = list(ci.keys())
+    values = [str(ci[k]) for k in keys if ci.get(k) is not None]
+
+    if not values:
+        return ""
+
+    mode = (mode or "auto").lower().strip()
+
+    if mode == "index":
+        if index is None:
+            return ""
+        k = str(index)
+        return str(ci.get(k, "")) if k in ci else ""
+
+    if mode == "random":
+        return str(random.choice(values))
+
+    # auto: prova 0..6, altrimenti random
+    for k in ["0", "1", "2", "3", "4", "5", "6"]:
+        if k in ci:
+            return str(ci[k])
+    return str(random.choice(values))
+
+
 def build_prompt_from_world(
     world: Dict[str, Any],
     seed: Optional[int] = None,
+    custom_intro_mode: str = "auto",
     custom_intro_index: Optional[int] = None,
-) -> str:
+) -> Tuple[str, str]:
     if seed is not None:
         random.seed(seed)
 
-    # 1) system prompt (se ti serve per debug/log o per ritorni futuri)
     system_prompt = str(world.get("SYSTEM_PROMPT", "")).strip()
 
-    # 2) prendi un custom_intro (se c’è)
-    custom_intro = ""
-    ci = world.get("CUSTOM_INTRO")
-    if isinstance(ci, dict) and ci:
-        if custom_intro_index is not None and str(custom_intro_index) in ci:
-            custom_intro = str(ci[str(custom_intro_index)])
-        else:
-            # prova 0..6, altrimenti random tra valori
-            for k in ["0", "1", "2", "3", "4", "5", "6"]:
-                if k in ci:
-                    custom_intro = str(ci[k])
-                    break
-            if not custom_intro:
-                custom_intro = str(random.choice(list(ci.values())))
+    custom_intro = _select_custom_intro(
+        world,
+        mode=custom_intro_mode,
+        index=custom_intro_index,
+    )
 
-    # 3) selezioni modulari (liste)
     outfits = _pick(world.get("OUTFITS"), "simple dark outfit")
     lighting = _pick(world.get("LIGHTING"), "low ambient light")
     backgrounds = _pick(world.get("BACKGROUNDS"), "intimate interior")
@@ -51,8 +75,7 @@ def build_prompt_from_world(
     atmos = _pick(world.get("ATMOSPHERES"), "quiet cinematic mood")
     accessories = _pick(world.get("ACCESSORIES"), "")
 
-    # 4) compone una frase unica (poi la raffiniamo nello step successivo)
-    core = _join_nonempty([
+    prompt = _join_nonempty([
         custom_intro,
         outfits,
         lighting,
@@ -65,5 +88,4 @@ def build_prompt_from_world(
         accessories,
     ])
 
-    # system_prompt lo teniamo separato: qui ritorniamo solo il prompt “artistico”
-    return core.strip(), system_prompt
+    return (prompt.strip(), system_prompt)
diff --git a/nodes/director.py b/nodes/director.py
index 4decb70..4c9071c 100644
--- a/nodes/director.py
+++ b/nodes/director.py
@@ -1,3 +1,7 @@
+from __future__ import annotations
+
+import random
+
 from ..core.world_registry import WorldRegistry
 from ..core.prompt_engine import build_prompt_from_world
 
@@ -13,22 +17,56 @@ class DirectorNode:
             "required": {
                 "world": (names,),
                 "seed": ("INT", {"default": 0, "min": 0, "max": 2**31 - 1}),
-            },
-            "optional": {
+                "lock": ("BOOLEAN", {"default": False}),
+                "control_after_generate": (["keep", "increment", "randomize"],),
+                "custom_intro_mode": (["auto", "index", "random"],),
                 "custom_intro_index": ("INT", {"default": -1, "min": -1, "max": 6}),
-            },
+            }
         }
 
-    RETURN_TYPES = ("STRING", "STRING")
-    RETURN_NAMES = ("prompt", "system_prompt")
+    RETURN_TYPES = ("STRING", "STRING", "INT")
+    RETURN_NAMES = ("prompt", "system_prompt", "next_seed")
     FUNCTION = "run"
     CATEGORY = "PFN/Director"
 
-    def run(self, world: str, seed: int, custom_intro_index: int = -1):
+    def run(
+        self,
+        world: str,
+        seed: int,
+        lock: bool,
+        control_after_generate: str,
+        custom_intro_mode: str,
+        custom_intro_index: int,
+    ):
         w = WorldRegistry.get(world)
         if not w:
-            return ("(world not found)", "")
+            return ("(world not found)", "", seed)
 
-        idx = None if custom_intro_index < 0 else int(custom_intro_index)
-        prompt, system_prompt = build_prompt_from_world(w, seed=seed, custom_intro_index=idx)
-        return (prompt, system_prompt)
+        # Seed effettivo per generare
+        effective_seed = int(seed)
+
+        # Custom intro index valido solo in modalità index
+        idx = None
+        if (custom_intro_mode == "index") and (custom_intro_index is not None) and (int(custom_intro_index) >= 0):
+            idx = int(custom_intro_index)
+
+        prompt, system_prompt = build_prompt_from_world(
+            w,
+            seed=effective_seed,
+            custom_intro_mode=custom_intro_mode,
+            custom_intro_index=idx,
+        )
+
+        # Next seed (utile da collegare ad altri nodi)
+        if lock:
+            next_seed = effective_seed
+        else:
+            mode = (control_after_generate or "keep").lower().strip()
+            if mode == "increment":
+                next_seed = (effective_seed + 1) % (2**31)
+            elif mode == "randomize":
+                next_seed = random.randint(0, 2**31 - 1)
+            else:
+                next_seed = effective_seed
+
+        return (prompt, system_prompt, next_seed)