diff --git a/client/battle/BattleWindow.cpp b/client/battle/BattleWindow.cpp
index c5f1734d9..9e24e7ff5 100644
--- a/client/battle/BattleWindow.cpp
+++ b/client/battle/BattleWindow.cpp
@@ -557,6 +557,15 @@ void BattleWindow::bSpellf()
 			LOCPLINT->showInfoDialog(boost::str(boost::format(CGI->generaltexth->allTexts[683])
 										% heroName % CGI->artifacts()->getByIndex(artID)->getNameTranslated()));
 		}
+		else if(blockingBonus->source == BonusSource::OBJECT_TYPE)
+		{
+			if(blockingBonus->sid.as<MapObjectID>() == Obj::GARRISON || blockingBonus->sid.as<MapObjectID>() == Obj::GARRISON2)
+				LOCPLINT->showInfoDialog(CGI->generaltexth->allTexts[684]);
+		}
+	}
+	else
+	{
+		logGlobal->warn("Unexpected problem with readiness to cast spell");
 	}
 }
 
diff --git a/lib/mapObjects/CArmedInstance.cpp b/lib/mapObjects/CArmedInstance.cpp
index 1420b24bd..3f92fe5dd 100644
--- a/lib/mapObjects/CArmedInstance.cpp
+++ b/lib/mapObjects/CArmedInstance.cpp
@@ -45,8 +45,8 @@ CArmedInstance::CArmedInstance()
 {
 }
 
-CArmedInstance::CArmedInstance(bool isHypotetic):
-	CBonusSystemNode(isHypotetic),
+CArmedInstance::CArmedInstance(bool isHypothetic):
+	CBonusSystemNode(isHypothetic),
 	nonEvilAlignmentMix(this, nonEvilAlignmentMixSelector),
 	battle(nullptr)
 {
diff --git a/lib/mapObjects/CArmedInstance.h b/lib/mapObjects/CArmedInstance.h
index 95cb59d43..815e250dc 100644
--- a/lib/mapObjects/CArmedInstance.h
+++ b/lib/mapObjects/CArmedInstance.h
@@ -43,7 +43,7 @@ public:
 	//////////////////////////////////////////////////////////////////////////
 
 	CArmedInstance();
-	CArmedInstance(bool isHypotetic);
+	CArmedInstance(bool isHypothetic);
 
 	PlayerColor getOwner() const override
 	{
diff --git a/lib/mapObjects/MiscObjects.cpp b/lib/mapObjects/MiscObjects.cpp
index 872e57ba4..0b70fac9c 100644
--- a/lib/mapObjects/MiscObjects.cpp
+++ b/lib/mapObjects/MiscObjects.cpp
@@ -12,6 +12,7 @@
 #include "MiscObjects.h"
 
 #include "../ArtifactUtils.h"
+#include "../bonuses/Propagators.h"
 #include "../constants/StringConstants.h"
 #include "../CConfigHandler.h"
 #include "../CGeneralTextHandler.h"
@@ -1005,6 +1006,23 @@ void CGGarrison::serializeJsonOptions(JsonSerializeFormat& handler)
 	CArmedInstance::serializeJsonOptions(handler);
 }
 
+void CGGarrison::initObj(CRandomGenerator &rand)
+{
+	if(this->subID == MapObjectSubID::decode(this->ID, "antiMagic"))
+		addAntimagicGarrisonBonus();
+}
+
+void CGGarrison::addAntimagicGarrisonBonus()
+{
+	auto bonus = std::make_shared<Bonus>();
+	bonus->type = BonusType::BLOCK_ALL_MAGIC;
+	bonus->source = BonusSource::OBJECT_TYPE;
+	bonus->sid = BonusSourceID(this->ID);
+	bonus->propagator = std::make_shared<CPropagatorNodeType>(CBonusSystemNode::BATTLE);
+	bonus->duration = BonusDuration::PERMANENT;
+	this->addNewBonus(bonus);
+}
+
 void CGMagi::initObj(CRandomGenerator & rand)
 {
 	if (ID == Obj::EYE_OF_MAGI)
diff --git a/lib/mapObjects/MiscObjects.h b/lib/mapObjects/MiscObjects.h
index b3fbe421b..365d13abe 100644
--- a/lib/mapObjects/MiscObjects.h
+++ b/lib/mapObjects/MiscObjects.h
@@ -60,6 +60,7 @@ class DLL_LINKAGE CGGarrison : public CArmedInstance
 public:
 	bool removableUnits;
 
+	void initObj(CRandomGenerator &rand) override;
 	bool passableFor(PlayerColor color) const override;
 	void onHeroVisit(const CGHeroInstance * h) const override;
 	void battleFinished(const CGHeroInstance *hero, const BattleResult &result) const override;
@@ -71,6 +72,7 @@ public:
 	}
 protected:
 	void serializeJsonOptions(JsonSerializeFormat & handler) override;
+	void addAntimagicGarrisonBonus();
 };
 
 class DLL_LINKAGE CGArtifact : public CArmedInstance