Item restriction and uplink description

code/datums/uplink_item.dm

@@ -586,7 +586,8 @@ GLOBAL_LIST_INIT(uplink_items, subtypesof(/datum/uplink_item))
 
 /datum/uplink_item/dangerous/guardian
 	name = "Holoparasites"
-	desc = "Though capable of near sorcerous feats via use of hardlight holograms and nanomachines, they require an organic host as a home base and source of fuel."
+	desc = "Though capable of near sorcerous feats via use of hardlight holograms and nanomachines, they require an organic host as a home base and source of fuel. \
+			The holoparasites are unable to incoporate themselves to changeling and vampire agents."
 	item = /obj/item/storage/box/syndie_kit/guardian
 	excludefrom = list(/datum/game_mode/nuclear)
 	cost = 12
@@ -755,7 +756,8 @@ GLOBAL_LIST_INIT(uplink_items, subtypesof(/datum/uplink_item))
 /datum/uplink_item/stealthy_weapons/martialarts
 	name = "Martial Arts Scroll"
 	desc = "This scroll contains the secrets of an ancient martial arts technique. You will master unarmed combat, \
-			deflecting all ranged weapon fire, but you also refuse to use dishonorable ranged weaponry."
+			deflecting all ranged weapon fire, but you also refuse to use dishonorable ranged weaponry. \
+			Unable to be understood by vampire and changeling agents."
 	reference = "SCS"
 	item = /obj/item/sleeping_carp_scroll
 	cost = 17

code/modules/martial_arts/martial.dm

@@ -143,6 +143,7 @@
 /obj/item/plasma_fist_scroll/attack_self(mob/user as mob)
 	if(!ishuman(user))
 		return
+
 	if(!used)
 		var/mob/living/carbon/human/H = user
 		var/datum/martial_art/plasma_fist/F = new/datum/martial_art/plasma_fist(null)
@@ -162,6 +163,14 @@
 /obj/item/sleeping_carp_scroll/attack_self(mob/living/carbon/human/user as mob)
 	if(!istype(user) || !user)
 		return
+	if(user.mind && (user.mind.changeling || user.mind.vampire)) //Prevents changelings and vampires from being able to learn it
+		if(user.mind && user.mind.changeling) //Changelings
+			to_chat(user, "We try multiple times, but we are not able to comprehend the contents of the scroll!")
+			return
+		else //Vampires
+			to_chat(user, "Your blood lust distracts you too much to be able to concentrate on the contents of the scroll!")
+			return
+
 	to_chat(user, "<span class='sciradio'>You have learned the ancient martial art of the Sleeping Carp! \
 					Your hand-to-hand combat has become much more effective, and you are now able to deflect any projectiles directed toward you. \
 					However, you are also unable to use any ranged weaponry. \