diff --git a/code/modules/antagonists/heretic/heretic_knowledge.dm b/code/modules/antagonists/heretic/heretic_knowledge.dm
index aca3c69d929c..915fc772a80a 100644
--- a/code/modules/antagonists/heretic/heretic_knowledge.dm
+++ b/code/modules/antagonists/heretic/heretic_knowledge.dm
@@ -737,7 +737,7 @@
  * Checks if the passed human is a valid sacrifice for our ritual.
  */
 /datum/heretic_knowledge/ultimate/proc/is_valid_sacrifice(mob/living/carbon/human/sacrifice)
-	return (sacrifice.stat == DEAD) && !ismonkey(sacrifice)
+	return ((sacrifice.stat == DEAD) && sacrifice.last_mind)
 
 /datum/heretic_knowledge/ultimate/on_finished_recipe(mob/living/user, list/selected_atoms, turf/loc)
 	var/datum/antagonist/heretic/heretic_datum = IS_HERETIC(user)
diff --git a/code/modules/antagonists/heretic/knowledge/void_lore.dm b/code/modules/antagonists/heretic/knowledge/void_lore.dm
index 9d79d4b41529..800637cbc6d4 100644
--- a/code/modules/antagonists/heretic/knowledge/void_lore.dm
+++ b/code/modules/antagonists/heretic/knowledge/void_lore.dm
@@ -268,7 +268,10 @@
 			close_carbon.adjust_silence_up_to(2 SECONDS, 20 SECONDS)
 			close_carbon.apply_status_effect(/datum/status_effect/void_chill, 1)
 			close_carbon.adjust_eye_blur(rand(0 SECONDS, 2 SECONDS))
-			close_carbon.adjust_bodytemperature(-30 * TEMPERATURE_DAMAGE_COEFFICIENT)
+			if(close_carbon.has_reagent(/datum/reagent/water/holywater))
+				close_carbon.adjust_bodytemperature(-5 * TEMPERATURE_DAMAGE_COEFFICIENT)
+			else
+				close_carbon.adjust_bodytemperature(-30 * TEMPERATURE_DAMAGE_COEFFICIENT)
 
 		else if(istype(thing_in_range, /obj/machinery/door) || istype(thing_in_range, /obj/structure/door_assembly))
 			var/obj/affected_door = thing_in_range
diff --git a/code/modules/antagonists/heretic/status_effects/void_chill.dm b/code/modules/antagonists/heretic/status_effects/void_chill.dm
index 7d2770af5e3e..eaa658f78909 100644
--- a/code/modules/antagonists/heretic/status_effects/void_chill.dm
+++ b/code/modules/antagonists/heretic/status_effects/void_chill.dm
@@ -15,6 +15,7 @@
 	var/stack_limit = 5
 	///icon for the overlay
 	var/mutable_appearance/stacks_overlay
+	COOLDOWN_DECLARE(chill_purge)
 
 /datum/status_effect/void_chill/on_creation(mob/living/new_owner, new_stacks, ...)
 	. = ..()
@@ -41,7 +42,18 @@
 	owner.update_icon(UPDATE_OVERLAYS)
 
 /datum/status_effect/void_chill/tick(seconds_per_ticks)
-	owner.adjust_bodytemperature(-12 KELVIN * stacks * seconds_per_ticks)
+	if(owner.has_reagent(/datum/reagent/water/holywater))
+		//void chill is less effective
+		owner.adjust_bodytemperature(-3 KELVIN * stacks * seconds_per_ticks)
+		if(!COOLDOWN_FINISHED(src, chill_purge))
+			return FALSE
+		COOLDOWN_START(src, chill_purge, 2 SECONDS)
+		to_chat(owner, span_notice("You feel holy water warming you up."))
+		adjust_stacks(-1)
+	else
+		owner.adjust_bodytemperature(-12 KELVIN * stacks * seconds_per_ticks)
+	if (stacks == 0)
+		owner.remove_status_effect(/datum/status_effect/void_chill)
 
 /datum/status_effect/void_chill/refresh(mob/living/new_owner, new_stacks, forced = FALSE)
 	. = ..()
@@ -84,7 +96,7 @@
 ///Updates the movespeed of owner based on the amount of stacks of the debuff
 /datum/status_effect/void_chill/proc/update_movespeed(stacks)
 	owner.add_movespeed_modifier(/datum/movespeed_modifier/void_chill, update = TRUE)
-	owner.add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/void_chill, update = TRUE, multiplicative_slowdown = (0.5 * stacks))
+	owner.add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/void_chill, update = TRUE, multiplicative_slowdown = (0.3 * stacks))
 	linked_alert.maptext = MAPTEXT_TINY_UNICODE("<span style='text-align:center'>[stacks]</span>")
 
 /datum/status_effect/void_chill/lasting
diff --git a/code/modules/antagonists/heretic/transmutation_rune.dm b/code/modules/antagonists/heretic/transmutation_rune.dm
index 35c8a7a9f434..d3e14d31d62c 100644
--- a/code/modules/antagonists/heretic/transmutation_rune.dm
+++ b/code/modules/antagonists/heretic/transmutation_rune.dm
@@ -159,6 +159,8 @@
 		loc.balloon_alert(user, "ritual failed, missing components!")
 		// Then let them know what they're missing
 		to_chat(user, span_hierophant_warning("You are missing [english_list(what_are_we_missing)] in order to complete the ritual \"[ritual.name]\"."))
+		if (istype(ritual, /datum/heretic_knowledge/ultimate))
+			to_chat(user, span_hierophant_warning("Reminder, that sacrifices need to have a soul in order to complete the ritual."))
 		return FALSE
 
 	// If we made it here, the ritual had all necessary components, and we can try to cast it.