diff --git a/common/ruletypes.h b/common/ruletypes.h
index 6c834c580..0c41a0c6d 100644
--- a/common/ruletypes.h
+++ b/common/ruletypes.h
@@ -529,6 +529,7 @@ RULE_INT(Spells, TargetedAOEMaxTargets, 4, "Max number of targets a Targeted AOE
 RULE_INT(Spells, PointBlankAOEMaxTargets, 0, "Max number of targets a Point-Blank AOE spell can cast on. Set to 0 for no limit.")
 RULE_INT(Spells, DefaultAOEMaxTargets, 0, "Max number of targets that an AOE spell which does not meet other descriptions can cast on. Set to 0 for no limit.")
 RULE_BOOL(Spells, AllowFocusOnSkillDamageSpells, false, "Allow focus effects 185, 459, and 482 to enhance SkillAttack spell effect 193")
+RULE_STRING(Spells, AlwaysStackSpells, "", "Comma-Seperated list of spell IDs to always stack with every other spell, except themselves.")
 RULE_CATEGORY_END()
 
 RULE_CATEGORY(Combat)
diff --git a/zone/spells.cpp b/zone/spells.cpp
index cb51fabe1..051503b7a 100644
--- a/zone/spells.cpp
+++ b/zone/spells.cpp
@@ -3135,6 +3135,17 @@ int Mob::CheckStackConflict(uint16 spellid1, int caster_level1, uint16 spellid2,
 		}
 	}
 
+	const std::string& always_stack_spells = RuleS(Spells, AlwaysStackSpells);
+	if (spellid1 != spellid2 && !always_stack_spells.empty()) {
+		const auto& v = Strings::Split(always_stack_spells, ",");
+		if (Strings::Contains(v, std::to_string(spellid1))) {
+			return 0;
+		}
+		if (Strings::Contains(v, std::to_string(spellid2))) {
+			return 0;
+		}
+	}
+
 	/*
 	One of these is a bard song and one isn't and they're both beneficial so they should stack.
 	*/