diff --git a/code/modules/mob/living/simple_animal/hostile/megafauna/hierophant.dm b/code/modules/mob/living/simple_animal/hostile/megafauna/hierophant.dm
index 6a47bf00c84..9bfea62e912 100644
--- a/code/modules/mob/living/simple_animal/hostile/megafauna/hierophant.dm
+++ b/code/modules/mob/living/simple_animal/hostile/megafauna/hierophant.dm
@@ -108,10 +108,9 @@ Difficulty: Hard
 	else
 		stat = DEAD
 		blinking = TRUE //we do a fancy animation, release a huge burst(), and leave our staff.
-		burst_range = 10
 		visible_message("<span class='hierophant'>\"Mrmxmexmrk wipj-hiwxvygx wiuyirgi...\"</span>")
 		visible_message("<span class='hierophant_warning'>[src] shrinks, releasing a massive burst of energy!</span>")
-		burst(get_turf(src))
+		INVOKE_ASYNC(GLOBAL_PROC, .proc/hierophant_burst, null, get_turf(src), 10)
 		..()
 
 /mob/living/simple_animal/hostile/megafauna/hierophant/Destroy()
@@ -423,7 +422,8 @@ Difficulty: Hard
 	for(var/t in RANGE_TURFS(1, T))
 		new /obj/effect/temp_visual/hierophant/blast(t, src, FALSE)
 
-/mob/living/simple_animal/hostile/megafauna/hierophant/proc/burst(turf/original, spread_speed = 0.5) //release a wave of blasts
+//expanding square
+/proc/hierophant_burst(mob/caster, turf/original, burst_range, spread_speed = 0.5)
 	playsound(original,'sound/machines/airlockopen.ogg', 200, 1)
 	var/last_dist = 0
 	for(var/t in spiral_range_turfs(burst_range, original))
@@ -434,7 +434,10 @@ Difficulty: Hard
 		if(dist > last_dist)
 			last_dist = dist
 			sleep(1 + min(burst_range - last_dist, 12) * spread_speed) //gets faster as it gets further out
-		new /obj/effect/temp_visual/hierophant/blast(T, src, FALSE)
+		new /obj/effect/temp_visual/hierophant/blast(T, caster, FALSE)
+
+/mob/living/simple_animal/hostile/megafauna/hierophant/proc/burst(turf/original, spread_speed)
+	hierophant_burst(src, original, burst_range, spread_speed)
 
 /mob/living/simple_animal/hostile/megafauna/hierophant/AltClickOn(atom/A) //player control handler(don't give this to a player holy fuck)
 	if(!istype(A) || get_dist(A, src) <= 2)
@@ -641,7 +644,8 @@ Difficulty: Hard
 						H.Goto(get_turf(caster), H.move_to_delay, 3)
 		if(monster_damage_boost && (ismegafauna(L) || istype(L, /mob/living/simple_animal/hostile/asteroid)))
 			L.adjustBruteLoss(damage)
-		log_combat(caster, L, "struck with a [name]")
+		if(caster)
+			log_combat(caster, L, "struck with a [name]")
 	for(var/obj/mecha/M in T.contents - hit_things) //also damage mechs.
 		hit_things += M
 		if(M.occupant)