diff --git a/scripts/post_install.py b/scripts/post_install.py
index 2f317a4..cb63533 100644
--- a/scripts/post_install.py
+++ b/scripts/post_install.py
@@ -5,25 +5,27 @@
 
 from spells.cache import spells_print
 
+
 def modify_activation_script():
     spells_print("install", "configuring environment for spells")
     venv_path = os.environ.get("VIRTUAL_ENV")
     if not venv_path:
         print("No virtual environment found")
         return
-    
+
     if sys.platform == "win32":
         activate_script = Path(venv_path) / "Scripts" / "activate.bat"
     else:
         activate_script = Path(venv_path) / "bin" / "activate"
-    
+
     if not activate_script.exists():
         print(f"Activation script not found at {activate_script}")
         return
-    
+
     with open(activate_script, "a") as f:
         f.write("\n# Custom environment setup\n")
         f.write("export LOG=$HOME/.local/share/spells/.logs/spells.log\n")
 
+
 if __name__ == "__main__":
     modify_activation_script()
diff --git a/spells/__init__.py b/spells/__init__.py
index a0f6133..33b81e7 100644
--- a/spells/__init__.py
+++ b/spells/__init__.py
@@ -7,4 +7,12 @@
 
 setup_logging()
 
-__all__ = ["summon", "view_select", "get_names", "ColSpec", "ColType", "ColName", "logging"]
+__all__ = [
+    "summon",
+    "view_select",
+    "get_names",
+    "ColSpec",
+    "ColType",
+    "ColName",
+    "logging",
+]
diff --git a/spells/cards.py b/spells/cards.py
index 54e58f9..47d3696 100644
--- a/spells/cards.py
+++ b/spells/cards.py
@@ -78,7 +78,13 @@ def card_df(draft_set_code: str, names: list[str]) -> pl.DataFrame:
     draft_set_json = _fetch_mtg_json(draft_set_code)
     booster_info = draft_set_json["data"]["booster"]
 
-    booster_type = "play" if "play" in booster_info else "draft" if "draft" in booster_info else list(booster_info.keys())[0]
+    booster_type = (
+        "play"
+        if "play" in booster_info
+        else "draft"
+        if "draft" in booster_info
+        else list(booster_info.keys())[0]
+    )
     set_codes = booster_info[booster_type]["sourceSetCodes"]
     set_codes.reverse()
 
diff --git a/spells/draft_data.py b/spells/draft_data.py
index 9055c5d..893017d 100644
--- a/spells/draft_data.py
+++ b/spells/draft_data.py
@@ -148,6 +148,10 @@ def seed_params(expr):
                     )
                 )
             except KeyError:
+                logging.warning(
+                    f"KeyError raised in calculation of {col}, probably caused by "
+                    + "missing context. Column will have value `None`"
+                )
                 expr = tuple(pl.lit(None).alias(f"{col}_{name}") for name in names)
         else:
             expr = tuple(map(lambda name: pl.col(f"{col}_{name}"), names))
@@ -233,7 +237,11 @@ def _infer_dependencies(
             ):
                 dependencies.add(split[0])
                 found = True
-        # fail silently here, so that columns can be passed in harmlessly
+        if not found:
+            logging.warning(
+                f"No column definition found matching dependency {item}! "
+                + "`summon` will fail if called with this column"
+            )
 
     return dependencies
 
diff --git a/spells/external.py b/spells/external.py
index 1b7cf4e..ec577f5 100644
--- a/spells/external.py
+++ b/spells/external.py
@@ -100,7 +100,7 @@ def cli() -> int:
 
 
 def _add(set_code: str, force_download=False):
-    if set_code == 'all':
+    if set_code == "all":
         for code in all_sets:
             _add(code, force_download=force_download)
 
diff --git a/spells/log.py b/spells/log.py
index 6c447db..6462285 100644
--- a/spells/log.py
+++ b/spells/log.py
@@ -63,12 +63,13 @@ def console_logging(log_level):
         logger.removeHandler(console_handler)
 
 
-def make_verbose(level: int=logging.ERROR) -> Callable:
+def make_verbose(level: int = logging.ERROR) -> Callable:
     def decorator(func: Callable) -> Callable:
         @wraps(func)
-        def wrapped(*args, log_to_console: int=level, **kwargs):
+        def wrapped(*args, log_to_console: int = level, **kwargs):
             with console_logging(log_to_console):
                 return func(*args, **kwargs)
+
         return wrapped
-    return decorator
 
+    return decorator