diff --git a/data/mods/Magiclysm/monster_factions.json b/data/mods/Magiclysm/monster_factions.json
index 26737c9d4a023..1af4c37b6896b 100644
--- a/data/mods/Magiclysm/monster_factions.json
+++ b/data/mods/Magiclysm/monster_factions.json
@@ -6,5 +6,9 @@
   {
     "type": "MONSTER_FACTION",
     "name": "dragon_black"
+  },
+  {
+    "type": "MONSTER_FACTION",
+    "name": "ooze"
   }
 ]
diff --git a/data/mods/Magiclysm/monstergroups.json b/data/mods/Magiclysm/monstergroups.json
index ef569e9319935..702e05e5c5c8f 100644
--- a/data/mods/Magiclysm/monstergroups.json
+++ b/data/mods/Magiclysm/monstergroups.json
@@ -23,6 +23,7 @@
     "default": "mon_null",
     "is_animal": true,
     "monsters": [
+      { "monster": "mon_black_pudding", "freq": 14, "cost_multiplier": 0.8, "pack_size": [ 4, 6 ] },
       { "monster": "mon_wisp", "freq": 5, "cost_multiplier": 10, "conditions": [ "NIGHT" ] },
       { "monster": "mon_wisp", "freq": 1, "cost_multiplier": 10, "conditions": [ "NIGHT" ], "pack_size": [ 1, 3 ] },
       { "monster": "mon_dragon_black_wyrmling", "freq": 2, "cost_multiplier": 50 },
diff --git a/data/mods/Magiclysm/monsters/monsters.json b/data/mods/Magiclysm/monsters/monsters.json
index 557c6c455f442..fd32a99da1790 100644
--- a/data/mods/Magiclysm/monsters/monsters.json
+++ b/data/mods/Magiclysm/monsters/monsters.json
@@ -32,6 +32,44 @@
     "special_attacks": [ { "type": "bite", "cooldown": 10 }, [ "GRAB", 7 ], [ "scratch", 7 ] ],
     "flags": [ "SEES", "HEARS", "SMELLS", "KEENNOSE", "PATH_AVOID_DANGER_1", "WARM", "GRABS", "SWARMS" ]
   },
+  {
+    "id": "mon_black_pudding",
+    "type": "MONSTER",
+    "name": "black pudding",
+    "description": "Writhing, sticky, black sludge undulates across the ground.  A faint sizzling sound comes from the ground beneath it as it lurches toward you.",
+    "default_faction": "ooze",
+    "bodytype": "blob",
+    "symbol": "O",
+    "species": [ "BLOB" ],
+    "diff": 1,
+    "volume": "62500 ml",
+    "weight": 81500,
+    "color": "dark_gray",
+    "hp": 100,
+    "speed": 75,
+    "phase": "LIQUID",
+    "aggression": 100,
+    "morale": 100,
+    "melee_skill": 5,
+    "melee_dice": 2,
+    "melee_dice_sides": 4,
+    "melee_cut": 0,
+    "armor_bash": 12,
+    "armor_stab": 14,
+    "armor_acid": 15,
+    "harvest": "exempt",
+    "death_function": [ "MELT" ],
+    "special_attacks": [
+      {
+        "type": "spell",
+        "spell_id": "bio_acidicspray",
+        "cooldown": 20,
+        "monster_message": "The black pudding burns you with acid!",
+        "level": 0
+      }
+    ],
+    "flags": [ "HEARS", "GOODHEARING", "NOHEAD", "POISON", "NO_BREATHE", "ACIDPROOF" ]
+  },
   {
     "id": "mon_nothic",
     "name": "nothic",