diff --git a/code/modules/mining/equipment/kinetic_crusher.dm b/code/modules/mining/equipment/kinetic_crusher.dm
index ee6e35106eca..721d086aca5b 100644
--- a/code/modules/mining/equipment/kinetic_crusher.dm
+++ b/code/modules/mining/equipment/kinetic_crusher.dm
@@ -102,7 +102,7 @@
 		var/target_health = L.health
 		for(var/t in trophies)
 			var/obj/item/crusher_trophy/T = t
-			T.on_mark_detonation(target, user)
+			T.on_mark_detonation(target, user, src) //we pass in the kinetic crusher so that on_mark_detonation can use the properties of the crusher to reapply marks: see malformed_bone
 		if(!QDELETED(L))
 			if(!QDELETED(C))
 				C.total_damage += target_health - L.health //we did some damage, but let's not assume how much we did
@@ -412,3 +412,20 @@
 
 /obj/effect/temp_visual/hierophant/wall/crusher
 	duration = 75
+
+//Legion (Megafauna)
+/obj/item/crusher_trophy/malformed_bone
+	name = "malformed bone"
+	desc = "A piece of bone caught in the act of division. Suitable as a trophy for a kinetic crusher."
+	icon_state = "malf_bone"
+	denied_type = /obj/item/crusher_trophy/malformed_bone
+	bonus_value = 40
+
+/obj/item/crusher_trophy/malformed_bone/effect_desc()
+	return "mark detonation to have a <b>[bonus_value]</b>% chance to trigger a second detonation"
+
+/obj/item/crusher_trophy/malformed_bone/on_mark_detonation(mob/living/target, mob/living/user, obj/item/twohanded/required/kinetic_crusher/hammer_synced)
+    if(hammer_synced)
+        for(var/mob/living/L in oview(2,user))//fuck you and everything around you with a mark
+            if(prob(bonus_value) && !L.has_status_effect(STATUS_EFFECT_CRUSHERMARK))
+                L.apply_status_effect(STATUS_EFFECT_CRUSHERMARK,hammer_synced)
diff --git a/code/modules/mob/living/simple_animal/hostile/megafauna/legion.dm b/code/modules/mob/living/simple_animal/hostile/megafauna/legion.dm
index 68bfc5c0ea70..0e8dde35a30f 100644
--- a/code/modules/mob/living/simple_animal/hostile/megafauna/legion.dm
+++ b/code/modules/mob/living/simple_animal/hostile/megafauna/legion.dm
@@ -169,6 +169,9 @@ Difficulty: Medium
 			loot = list(/obj/item/staff/storm,
 			/obj/item/clothing/suit/space/hardsuit/ert/paranormal/beserker,
 			/obj/item/keycard/necropolis)
+			crusher_loot = list(/obj/item/crusher_trophy/malformed_bone,/obj/item/staff/storm,
+			/obj/item/clothing/suit/space/hardsuit/ert/paranormal/beserker,
+			/obj/item/keycard/necropolis) //the way it is now you can get this if you just whip out the crusher towards the end but nobody's gonna do that probably
 			elimination = FALSE
 		else if(prob(10))
 			loot = list(/obj/structure/closet/crate/necropolis/tendril)
diff --git a/icons/obj/lavaland/artefacts.dmi b/icons/obj/lavaland/artefacts.dmi
index 9c3b2490c833..8200901f1825 100644
Binary files a/icons/obj/lavaland/artefacts.dmi and b/icons/obj/lavaland/artefacts.dmi differ