Minor action datum refactor and spellcasting fix.

code/modules/mob/living/carbon/alien/humanoid/alien_powers.dm

@@ -21,14 +21,13 @@ Doesn't work on other aliens/AI.*/
 	. = ..()
 	action = new(src)
 
-/obj/effect/proc_holder/alien/Click()
-	if(!iscarbon(usr))
-		return 1
-	var/mob/living/carbon/user = usr
-	if(cost_check(check_turf,user))
+/obj/effect/proc_holder/alien/Trigger(mob/living/carbon/user, skip_cost_check)
+	if(!istype(user))
+		return TRUE
+	if(!skip_cost_check || cost_check(check_turf,user))
 		if(fire(user) && user) // Second check to prevent runtimes when evolving
 			user.adjustPlasma(-plasma_cost)
-	return 1
+	return TRUE
 
 /obj/effect/proc_holder/alien/on_gain(mob/living/carbon/user)
 	return

code/modules/mob/living/carbon/human/species_types/golems.dm

@@ -469,7 +469,7 @@
 	var/cooldown = 150
 	var/last_teleport = 0
 
-/datum/action/innate/unstable_teleport/IsAvailable()
+/datum/action/innate/unstable_teleport/IsAvailable(silent = FALSE)
 	if(..())
 		if(world.time > last_teleport + cooldown)
 			return 1

code/modules/mob/living/carbon/human/species_types/jellypeople.dm

@@ -84,7 +84,7 @@
 	background_icon_state = "bg_alien"
 	required_mobility_flags = NONE
 
-/datum/action/innate/regenerate_limbs/IsAvailable()
+/datum/action/innate/regenerate_limbs/IsAvailable(silent = FALSE)
 	if(..())
 		var/mob/living/carbon/human/H = owner
 		var/list/limbs_to_heal = H.get_missing_limbs()
@@ -223,7 +223,7 @@
 	icon_icon = 'icons/mob/actions/actions_slime.dmi'
 	background_icon_state = "bg_alien"
 
-/datum/action/innate/split_body/IsAvailable()
+/datum/action/innate/split_body/IsAvailable(silent = FALSE)
 	if(..())
 		var/mob/living/carbon/human/H = owner
 		if(H.blood_volume >= BLOOD_VOLUME_SLIME_SPLIT)
@@ -776,7 +776,7 @@
 	..()
 	species = _species
 
-/datum/action/innate/use_extract/IsAvailable()
+/datum/action/innate/use_extract/IsAvailable(silent = FALSE)
 	if(..())
 		if(species && species.current_extract && (world.time > species.extract_cooldown))
 			return TRUE

code/modules/mob/living/say.dm

@@ -354,7 +354,7 @@ GLOBAL_LIST_INIT(department_radio_keys, list(
 
 	if(cultslurring)
 		message = cultslur(message)
-	
+
 	if(clockcultslurring)
 		message = CLOCK_CULT_SLUR(message)
 

code/modules/mob/living/simple_animal/hostile/giant_spider.dm

@@ -400,10 +400,9 @@
 	action.button_icon_state = "wrap_[active]"
 	action.UpdateButtonIcon()
 
-/obj/effect/proc_holder/wrap/Click()
-	if(!istype(usr, /mob/living/simple_animal/hostile/poison/giant_spider/nurse))
+/obj/effect/proc_holder/wrap/Trigger(mob/living/simple_animal/hostile/poison/giant_spider/nurse/user)
+	if(!istype(user))
 		return TRUE
-	var/mob/living/simple_animal/hostile/poison/giant_spider/nurse/user = usr
 	activate(user)
 	return TRUE
 
@@ -444,7 +443,7 @@
 	check_flags = AB_CHECK_CONSCIOUS
 	button_icon_state = "lay_eggs"
 
-/datum/action/innate/spider/lay_eggs/IsAvailable()
+/datum/action/innate/spider/lay_eggs/IsAvailable(silent = FALSE)
 	if(..())
 		if(!istype(owner, /mob/living/simple_animal/hostile/poison/giant_spider/nurse))
 			return 0
@@ -508,7 +507,7 @@
 	desc = "Send a command to all living spiders."
 	button_icon_state = "command"
 
-/datum/action/innate/spider/comm/IsAvailable()
+/datum/action/innate/spider/comm/IsAvailable(silent = FALSE)
 	if(!istype(owner, /mob/living/simple_animal/hostile/poison/giant_spider/nurse/midwife))
 		return FALSE
 	return TRUE

code/modules/mob/living/simple_animal/slime/powers.dm

@@ -11,7 +11,7 @@
 	background_icon_state = "bg_alien"
 	var/needs_growth = NO_GROWTH_NEEDED
 
-/datum/action/innate/slime/IsAvailable()
+/datum/action/innate/slime/IsAvailable(silent = FALSE)
 	if(..())
 		var/mob/living/simple_animal/slime/S = owner
 		if(needs_growth == GROWTH_NEEDED)