diff --git a/code/modules/antagonists/cult/blood_magic.dm b/code/modules/antagonists/cult/blood_magic.dm
index 1b4268765a2..df9db661adb 100644
--- a/code/modules/antagonists/cult/blood_magic.dm
+++ b/code/modules/antagonists/cult/blood_magic.dm
@@ -178,7 +178,7 @@
 
 /datum/action/innate/cult/blood_spell/construction
 	name = "Twisted Construction"
-	desc = "Empowers your hand to corrupt certain metalic objects.<br><u>Converts:</u><br>Plasteel into runed metal<br>50 metal into a construct shell<br>Living cyborgs into constructs after a delay<br>Cyborg shells into construct shells<br>Airlocks into brittle runed airlocks after a delay (harm intent)"
+	desc = "Empowers your hand to corrupt certain metalic objects.<br><u>Converts:</u><br>Plasteel into runed metal<br>50 metal into a construct shell<br>Living cyborgs into constructs after a delay<br>Cyborg shells into construct shells<br>Purified soulstones (and any shades inside) into cultist soulstones<br>Airlocks into brittle runed airlocks after a delay (harm intent)"
 	button_icon_state = "transmute"
 	magic_path = "/obj/item/melee/blood_magic/construction"
 	health_cost = 12
@@ -576,6 +576,7 @@
 	[IRON_TO_CONSTRUCT_SHELL_CONVERSION] iron into a construct shell\n
 	Living cyborgs into constructs after a delay\n
 	Cyborg shells into construct shells\n
+	Purified soulstones (and any shades inside) into cultist soulstones\n
 	Airlocks into brittle runed airlocks after a delay (harm intent)"}
 
 /obj/item/melee/blood_magic/construction/afterattack(atom/target, mob/user, proximity_flag, click_parameters)
@@ -652,6 +653,12 @@
 			else
 				channeling = FALSE
 				return
+		else if(istype(target,/obj/item/soulstone))
+			var/obj/item/soulstone/candidate = target
+			if(candidate.corrupt())
+				uses--
+				to_chat(user, span_warning("You corrupt [candidate]!"))
+				SEND_SOUND(user, sound('sound/effects/magic.ogg',0,1,25))
 		else
 			to_chat(user, span_warning("The spell will not work on [target]!"))
 			return
diff --git a/code/modules/antagonists/cult/runes.dm b/code/modules/antagonists/cult/runes.dm
index 42a478627a1..efae533e74f 100644
--- a/code/modules/antagonists/cult/runes.dm
+++ b/code/modules/antagonists/cult/runes.dm
@@ -283,6 +283,9 @@ structure_check() searches for nearby cultist structures required for the invoca
 		H.cultslurring = 0
 		if(prob(1) || SSevents.holidays && SSevents.holidays[APRIL_FOOLS])
 			H.say("You son of a bitch! I'm in.", forced = "That son of a bitch! They're in.")
+	if(isshade(convertee))
+		convertee.icon_state = "shade_cult"
+		convertee.name = convertee.real_name
 	return TRUE
 
 /obj/effect/rune/convert/proc/do_sacrifice(mob/living/sacrificial, list/invokers)
diff --git a/code/modules/antagonists/wizard/equipment/soulstone.dm b/code/modules/antagonists/wizard/equipment/soulstone.dm
index 8799874b0db..e6adc38807f 100644
--- a/code/modules/antagonists/wizard/equipment/soulstone.dm
+++ b/code/modules/antagonists/wizard/equipment/soulstone.dm
@@ -52,10 +52,32 @@
 		mob_cultist.mind.remove_antag_datum(/datum/antagonist/cult)
 	for(var/mob/living/simple_animal/shade/sharded_shade in src)
 		sharded_shade.icon_state = "ghost1"
-		sharded_shade.name = "Purified [initial(sharded_shade.name)]"
+		sharded_shade.name = "Purified [sharded_shade.real_name]"
 	exorcist.visible_message(span_notice("[exorcist] purifies [src]!"))
 	UnregisterSignal(src, COMSIG_BIBLE_SMACKED)
 
+/**
+ * corrupt: turns the soulstone into a cult one and turns the occupant shade, if any, into a cultist
+ */
+/obj/item/soulstone/proc/corrupt()
+	if(theme == THEME_CULT)
+		return FALSE
+	required_role = null
+	theme = THEME_CULT
+	icon_state = "soulstone"
+	for(var/mob/shade_to_convert in contents)
+		if(!shade_to_convert.mind)
+			continue
+		icon_state = "soulstone2"
+		if(IS_CULTIST(shade_to_convert))
+			continue
+		shade_to_convert.mind.add_antag_datum(/datum/antagonist/cult)
+	for(var/mob/living/simple_animal/shade/sharded_shade in src)
+		sharded_shade.icon_state = "shade_cult"
+		sharded_shade.name = sharded_shade.real_name
+	RegisterSignal(src, COMSIG_BIBLE_SMACKED)
+	return TRUE
+
 /obj/item/soulstone/proc/role_check(mob/who)
 	return required_role ? (who.mind && who.mind.has_antag_datum(required_role, TRUE)) : TRUE
 
@@ -175,7 +197,7 @@
 			if(THEME_HOLY)
 				icon_state = "purified_soulstone"
 				A.icon_state = "shade_holy"
-				A.name = "Purified [initial(A.name)]"
+				A.name = "Purified [A.real_name]"
 				A.loot = list(/obj/item/ectoplasm/angelic)
 			if(THEME_WIZARD)
 				icon_state = "mystic_soulstone"
@@ -289,7 +311,7 @@
 		icon_state = "mystic_soulstone2"
 	if(theme == THEME_CULT)
 		icon_state = "soulstone2"
-	name = "soulstone: Shade of [shade.real_name]"
+	name = "soulstone: [shade.real_name]"
 	to_chat(shade, span_notice("Your soul has been captured by [src]. Its arcane energies are reknitting your ethereal form."))
 	if(user != shade)
 		to_chat(user, "[span_info("<b>Capture successful!</b>:")] [shade.real_name]'s soul has been captured and stored within [src].")