diff --git a/code/datums/spells/greaterknock.dm b/code/datums/spells/greaterknock.dm
new file mode 100644
index 00000000000..4e8281d43d2
--- /dev/null
+++ b/code/datums/spells/greaterknock.dm
@@ -0,0 +1,42 @@
+/obj/effect/proc_holder/spell/aoe_turf/greaterknock
+	name = "Greater Knock"
+	desc = "On first cast, will remove access restrictions on all airlocks on the Cyberiad, and announce this spell's use and your arrival to the station. On any further cast, will open all doors in sight. Cannot be refunded once bought!"
+
+	school = "transmutation"
+	charge_max = 200
+	clothes_req = 0
+	invocation = "MAIOR OXIN FIERA"
+	invocation_type = "shout"
+	range = 7
+	cooldown_min = 40 //40 deciseconds reduction per rank
+	action_icon_state = "knock"
+	sound = 'sound/magic/Knock.ogg'
+	var/used = FALSE
+
+/obj/effect/proc_holder/spell/aoe_turf/greaterknock/cast(list/targets, mob/user = usr)
+	if (!used)
+		for(var/obj/machinery/door/airlock/A in airlocks)
+			if(is_station_level(A.z))
+				A.req_access = list()
+		if (is_station_level(usr.z))
+			command_announcement.Announce("We have noticed several issues inhibiting productivity on your station, and would like to help resolving them! We have already improved your airlock access system. No longer will you be unable to get what you need, as of now you can go anywhere you want! One of our employees should already be on-site to further improve your station. Have a pleasant day!", "Greetings!", 'sound/misc/notice2.ogg', , , "Space Wizard Federation Message")
+		else
+			command_announcement.Announce("We have noticed several issues inhibiting productivity on your station, and would like to help resolving them! We have already improved your airlock access system. No longer will you be unable to get what you need, as of now you can go anywhere you want! We are sending one of our employees to further improve your station. Have a pleasant day!", "Greetings!", 'sound/misc/notice2.ogg', , , "Space Wizard Federation Message")
+		used = TRUE
+	else
+		for(var/turf/T in targets)
+			for(var/obj/machinery/door/door in T.contents)
+				spawn(1)
+					if(istype(door,/obj/machinery/door/airlock/hatch/gamma))
+						return
+					if(istype(door,/obj/machinery/door/airlock))
+						var/obj/machinery/door/airlock/A = door
+						A.unlock(1)	//forced because it's magic!
+					door.open()
+			for(var/obj/structure/closet/C in T.contents)
+				spawn(1)
+					if(istype(C, /obj/structure/closet/secure_closet))
+						var/obj/structure/closet/secure_closet/SC = C
+						SC.locked = 0
+					C.open()
+	return
\ No newline at end of file
diff --git a/code/game/gamemodes/wizard/spellbook.dm b/code/game/gamemodes/wizard/spellbook.dm
index 0c380010e6a..3f8932be573 100644
--- a/code/game/gamemodes/wizard/spellbook.dm
+++ b/code/game/gamemodes/wizard/spellbook.dm
@@ -202,6 +202,14 @@
 	category = "Mobility"
 	cost = 1
 
+/datum/spellbook_entry/greaterknock
+	name = "Greater Knock"
+	spell_type = /obj/effect/proc_holder/spell/aoe_turf/greaterknock
+	log_name = "GK"
+	category = "Mobility"
+	cost = 2
+	refundable = 0 //global effect on cast
+
 /datum/spellbook_entry/fleshtostone
 	name = "Flesh to Stone"
 	spell_type = /obj/effect/proc_holder/spell/targeted/touch/flesh_to_stone
diff --git a/paradise.dme b/paradise.dme
index 70eaa50867a..b229bbc79b9 100644
--- a/paradise.dme
+++ b/paradise.dme
@@ -332,6 +332,7 @@
 #include "code\datums\spells\explosion.dm"
 #include "code\datums\spells\fake_gib.dm"
 #include "code\datums\spells\genetic.dm"
+#include "code\datums\spells\greaterknock.dm"
 #include "code\datums\spells\horsemask.dm"
 #include "code\datums\spells\infinite_guns.dm"
 #include "code\datums\spells\inflict_handler.dm"