Proto-kinetic crushers are significantly better

code/datums/status_effects/debuffs.dm

@@ -166,4 +166,30 @@
 /datum/status_effect/cultghost //is a cult ghost and can't use manifest runes
 	id = "cult_ghost"
 	duration = -1
-	alert_type = null
+	alert_type = null
+/datum/status_effect/crusher_mark
+	id = "crusher_mark"
+	duration = 600 //if you leave for a minute you lose the mark, deal with it
+	status_type = STATUS_EFFECT_REPLACE
+	alert_type = null
+	var/mutable_appearance/marked_underlay
+	var/obj/item/weapon/twohanded/required/mining_hammer/hammer_synced
+
+/datum/status_effect/crusher_mark/on_apply()
+	if(owner.mob_size >= MOB_SIZE_LARGE)
+		marked_underlay = mutable_appearance('icons/effects/effects.dmi', "shield2")
+		marked_underlay.pixel_x = -owner.pixel_x
+		marked_underlay.pixel_y = -owner.pixel_y
+		owner.underlays += marked_underlay
+	return FALSE
+
+/datum/status_effect/crusher_mark/Destroy()
+	hammer_synced = null
+	if(owner)
+		owner.underlays -= marked_underlay
+	QDEL_NULL(marked_underlay)
+	return ..()
+
+/datum/status_effect/crusher_mark/be_replaced()
+	owner.underlays -= marked_underlay //if this is being called, we should have an owner at this point.
+	..()

code/datums/status_effects/debuffs.dm.rej

@@ -0,0 +1,10 @@
+diff a/code/datums/status_effects/debuffs.dm b/code/datums/status_effects/debuffs.dm	(rejected hunks)
+@@ -170,7 +170,7 @@
+ 
+ /datum/status_effect/crusher_mark
+ 	id = "crusher_mark"
+-	duration = 600 //if you leave for a minute you lose the mark, deal with it
++	duration = 300 //if you leave for 30 seconds you lose the mark, deal with it
+ 	status_type = STATUS_EFFECT_REPLACE
+ 	alert_type = null
+ 	var/mutable_appearance/marked_underlay