adds transfer potion to xenobio rainbow core + blood, potion and reaction

code/modules/reagents/chemistry/recipes/slime_extracts.dm

@@ -661,4 +661,18 @@
 	var/mob/living/carbon/slime/S = new /mob/living/carbon/slime
 	S.colour = pick("grey","orange", "metal", "blue", "purple", "dark purple", "dark blue", "green", "silver", "yellow", "gold", "yellow", "red", "silver", "pink", "cerulean", "sepia", "bluespace", "pyrite", "light pink", "oil", "adamantine", "black")
 	S.forceMove(get_turf(holder.my_atom))
-	S.visible_message("<span class='danger'>Infused with plasma, the core begins to quiver and grow, and soon a new baby slime emerges from it!</span>")
+	S.visible_message("<span class='danger'>Infused with plasma, the core begins to quiver and grow, and soon a new baby slime emerges from it!</span>")
+
+/datum/chemical_reaction/slime_transfer
+	name = "Transfer Potion"
+	id = "slimetransfer"
+	result = null
+	required_reagents = list("blood" = 1)
+	result_amount = 1
+	required_other = 1
+	required_container = /obj/item/slime_extract/rainbow
+
+/datum/chemical_reaction/slime_transfer/on_reaction(datum/reagents/holder)
+	feedback_add_details("slime_cores_used","[type]")
+	var/obj/item/slimepotion/transference/P = new /obj/item/slimepotion/transference
+	P.forceMove(get_turf(holder.my_atom))

code/modules/research/xenobiology/xenobiology.dm

@@ -221,6 +221,48 @@
 		being_used = 0
 		..()
 
+/obj/item/slimepotion/transference
+	name = "consciousness transference potion"
+	desc = "A strange slime-based chemical that, when used, allows the user to transfer their consciousness to a lesser being."
+	icon = 'icons/obj/chemical.dmi'
+	icon_state = "bottle19"
+	origin_tech = "biotech=6"
+	var/prompted = FALSE
+	var/animal_type = SENTIENCE_ORGANIC
+
+/obj/item/slimepotion/transference/afterattack(mob/living/M, mob/user)
+	if(prompted || !ismob(M))
+		return
+	if(!isanimal(M) || M.ckey) //much like sentience, these will not work on something that is already player controlled
+		user << "<span class='warning'>[M] already has a higher consciousness!</span>"
+		return ..()
+	if(M.stat)
+		user << "<span class='warning'>[M] is dead!</span>"
+		return ..()
+	var/mob/living/simple_animal/SM = M
+	if(SM.sentience_type != animal_type)
+		to_chat(user, "<span class='warning'>You cannot transfer your consciousness to [SM].</span>") //no controlling machines
+		return ..()
+	if(jobban_isbanned(user, ROLE_SENTIENT))
+		to_chat(user, "<span class='warning'>Your mind goes blank as you attempt to use the potion.</span>")
+		return
+
+	prompted = TRUE
+	if(alert("This will permanently transfer your consciousness to [SM]. Are you sure you want to do this?",,"Yes","No")=="No")
+		prompted = FALSE
+		return
+
+	to_chat(user, "<span class='notice'>You drink the potion then place your hands on [SM]...</span>")
+	user.mind.transfer_to(SM)
+	SM.universal_speak = 1
+	SM.faction = user.faction
+	SM.sentience_act() //Same deal here as with sentience
+	user.death()
+	to_chat(SM, "<span class='notice'>In a quick flash, you feel your consciousness flow into [SM]!</span>")
+	to_chat(SM, "<span class='warning'>You are now [SM]. Your allegiances, alliances, and roles are still the same as they were prior to consciousness transfer!</span>")
+	SM.name = "[SM.name] as [user.real_name]"
+	qdel(src)
+
 /obj/item/slimepotion/steroid
 	name = "slime steroid"
 	desc = "A potent chemical mix that will cause a baby slime to generate more extract."