diff --git a/Source/itemdat.h b/Source/itemdat.h
index b52c8cd88e2d..3d539fb58ba5 100644
--- a/Source/itemdat.h
+++ b/Source/itemdat.h
@@ -360,7 +360,7 @@ enum class ItemSpecialEffect : uint32_t {
 };
 use_enum_as_flags(ItemSpecialEffect);
 
-enum class ItemSpecialEffectHf : uint8_t {
+enum class ItemSpecialEffectHf : uint16_t {
 	// clang-format off
 	None               = 0,
 	Devastation        = 1 << 0,
@@ -370,6 +370,8 @@ enum class ItemSpecialEffectHf : uint8_t {
 	Doppelganger       = 1 << 4,
 	ACAgainstDemons    = 1 << 5,
 	ACAgainstUndead    = 1 << 6,
+	ManaToLife         = 1 << 7,
+	LifeToMana         = 1 << 8,
 	// clang-format on
 };
 use_enum_as_flags(ItemSpecialEffectHf);
diff --git a/Source/items.cpp b/Source/items.cpp
index 11e2df886900..79269f6ec4ba 100644
--- a/Source/items.cpp
+++ b/Source/items.cpp
@@ -1010,16 +1010,12 @@ int SaveItemPower(const Player &player, Item &item, ItemPower &power)
 	case IPL_ACUNDEAD:
 		item._iDamAcFlags |= ItemSpecialEffectHf::ACAgainstUndead;
 		break;
-	case IPL_MANATOLIFE: {
-		int portion = ((player._pMaxManaBase >> 6) * 50 / 100) << 6;
-		item._iPLMana -= portion;
-		item._iPLHP += portion;
-	} break;
-	case IPL_LIFETOMANA: {
-		int portion = ((player._pMaxHPBase >> 6) * 40 / 100) << 6;
-		item._iPLHP -= portion;
-		item._iPLMana += portion;
-	} break;
+	case IPL_MANATOLIFE:
+		item._iDamAcFlags |= ItemSpecialEffectHf::ManaToLife;
+		break;
+	case IPL_LIFETOMANA:
+		item._iDamAcFlags |= ItemSpecialEffectHf::LifeToMana;
+		break;
 	default:
 		break;
 	}
@@ -2375,8 +2371,21 @@ void CalcPlrItemVals(Player &player, bool loadgfx)
 				dmod += item._iPLDamMod;
 				ghit += item._iPLGetHit;
 				lrad += item._iPLLight;
-				ihp += item._iPLHP;
-				imana += item._iPLMana;
+
+				// Check for Acolyte's Amulet and Gladiator Ring to apply bonuses as life and mana changes, rather than getting static bonuses from the item data
+				if (IsAnyOf(item._iDamAcFlags, ItemSpecialEffectHf::ManaToLife)) {
+					int portion = ((player._pMaxManaBase >> 6) * 50 / 100) << 6;
+					imana -= portion;
+					ihp += portion;
+				} else if (IsAnyOf(item._iDamAcFlags, ItemSpecialEffectHf::LifeToMana)) {
+					int portion = ((player._pMaxHPBase >> 6) * 40 / 100) << 6;
+					ihp -= portion;
+					imana += portion;
+				} else {
+					ihp += item._iPLHP;
+					imana += item._iPLMana;
+				}
+
 				spllvladd += item._iSplLvlAdd;
 				enac += item._iPLEnAc;
 				fmin += item._iFMinDam;