Replace some spell books dropped by mobs and found in library ruins with ruined spell books

src/main/resources/assets/ebwizardry/loot_tables/chests/library_ruins_bookshelf.json

@@ -26,7 +26,7 @@
                 {
                     "type": "item",
                     "name": "ebwizardry:spell_book",
-                    "weight": 20,
+                    "weight": 15,
                     "functions": [
                         {
                             "function": "ebwizardry:random_spell",
@@ -34,6 +34,11 @@
                         }
                     ]
                 },
+                {
+                    "type": "item",
+                    "name": "ebwizardry:ruined_spell_book",
+                    "weight": 5
+                },
                 {
                     "type": "item",
                     "name": "ebwizardry:scroll",

src/main/resources/assets/ebwizardry/loot_tables/entities/mob_additions.json

@@ -28,6 +28,11 @@
                             ]
                         }
                     ]
+                },
+                {
+                    "type": "item",
+                    "name": "ebwizardry:ruined_spell_book",
+                    "weight": 1
                 }
             ]
         }