diff --git a/src/mc/world/level/block/BlockDescriptor.h b/src/mc/world/level/block/BlockDescriptor.h
index 3a339ce120..daaa61b082 100644
--- a/src/mc/world/level/block/BlockDescriptor.h
+++ b/src/mc/world/level/block/BlockDescriptor.h
@@ -13,6 +13,9 @@ namespace cereal { struct ReflectionCtx; }
 // clang-format on
 
 class BlockDescriptor {
+public:
+    char filler[0xB8];
+
 public:
     // BlockDescriptor inner types declare
     // clang-format off
diff --git a/src/mc/world/level/levelgen/feature/OreFeature.h b/src/mc/world/level/levelgen/feature/OreFeature.h
index 46a47e4649..7a61dc0ef5 100644
--- a/src/mc/world/level/levelgen/feature/OreFeature.h
+++ b/src/mc/world/level/levelgen/feature/OreFeature.h
@@ -1,11 +1,24 @@
 #pragma once
 
 #include "mc/_HeaderOutputPredefine.h"
+#include "mc/world/level/block/Block.h"
+#include "mc/world/level/block/BlockLegacy.h"
+#include "mc/world/level/levelgen/feature/ReplaceRule.h"
 
 // auto generated inclusion list
 #include "mc/world/level/levelgen/feature/IFeature.h"
 
 class OreFeature : public ::IFeature {
+public:
+    int                      mCount;
+    float                    mCountf;
+    float                    mCountfInv;
+    float                    mDiscardChanceOnAirExposure;
+    std::vector<ReplaceRule> mReplaceRules;
+
+    // Bedrock::Threading::InstancedThreadLocal<OreFeature::Helper, std::allocator<OreFeature::Helper>>;
+    char mHelper[0xE0 - 48];
+
 public:
     // OreFeature inner types declare
     // clang-format off
@@ -14,6 +27,9 @@ class OreFeature : public ::IFeature {
 
     // OreFeature inner types define
     class ReplaceRulesAccelerator {
+    public:
+        std::vector<std::pair<Block const*, std::vector<BlockLegacy const*>>> mRules;
+
     public:
         // prevent constructor by default
         ReplaceRulesAccelerator& operator=(ReplaceRulesAccelerator const&);
@@ -22,7 +38,7 @@ class OreFeature : public ::IFeature {
 
     public:
         // NOLINTBEGIN
-        MCAPI void setRules(std::vector<struct ReplaceRule> const&);
+        MCAPI void setRules(std::vector<struct ReplaceRule> const& replaceRules);
 
         // NOLINTEND
     };
@@ -50,7 +66,7 @@ class OreFeature : public ::IFeature {
 
     MCAPI OreFeature();
 
-    MCAPI OreFeature(int count, std::vector<struct ReplaceRule>&&);
+    MCAPI OreFeature(int count, std::vector<struct ReplaceRule>&& replaceRules);
 
     // NOLINTEND
 };
diff --git a/src/mc/world/level/levelgen/feature/ReplaceRule.h b/src/mc/world/level/levelgen/feature/ReplaceRule.h
index f617e7169e..9c3d54c8e6 100644
--- a/src/mc/world/level/levelgen/feature/ReplaceRule.h
+++ b/src/mc/world/level/levelgen/feature/ReplaceRule.h
@@ -1,8 +1,13 @@
 #pragma once
 
 #include "mc/_HeaderOutputPredefine.h"
+#include "mc/world/level/block/BlockDescriptor.h"
 
 struct ReplaceRule {
+public:
+    BlockDescriptor              mBlock;
+    std::vector<BlockDescriptor> mMayReplace;
+
 public:
     // prevent constructor by default
     ReplaceRule& operator=(ReplaceRule const&);