Index: src/script/interpreter.cpp
===================================================================
--- src/script/interpreter.cpp
+++ src/script/interpreter.cpp
@@ -82,6 +82,28 @@
 }
 
 static bool IsOpcodeDisabled(opcodetype opcode, uint32_t flags) {
+    bool fEnabledOpCodesMagnetic =
+        (flags & SCRIPT_ENABLE_MAGNETIC_OPCODES) != 0;
+
+    if (fEnabledOpCodesMagnetic) {
+        switch (opcode) {
+            case OP_INVERT:
+                return true;
+
+            case OP_MUL:
+                return true;
+
+            case OP_LSHIFT:
+                return true;
+
+            case OP_RSHIFT:
+                return true;
+
+            default:
+                break;
+        }
+    }
+
     switch (opcode) {
         case OP_INVERT:
         case OP_2MUL: