Cult Manifest Bugfix / Tweaks

Changes:
1) Summoned human-body ghosts are no longer invincible 'dummy' humans
with godmode. They are now killable, like anything else.
2) The damage done by manifest rune is 0 for the first 30 cycles, then
1/cycle for the next 30 cycles, then 2/cycle thereafter. This is
intended to allow cultists to do a quick summon for free, but prevent
them from keeping ghosts summoned forever.

🆑 Kyep
fix: Ghosts manifested by cultists are no longer invincible, and the
amount of damage done to the person invoking manifest runes has been
tweaked such that the rune is much harder to use for a long period of
time.
/🆑

Aims to fix: https://github.com/ParadiseSS13/Paradise/issues/6854

code/game/gamemodes/cult/runes.dm

@@ -968,7 +968,7 @@ var/list/teleport_runes = list()
 		if(O.client && !jobban_isbanned(O, ROLE_CULTIST) && !jobban_isbanned(O, ROLE_SYNDICATE))
 			ghosts_on_rune |= O
 	var/mob/dead/observer/ghost_to_spawn = pick(ghosts_on_rune)
-	var/mob/living/carbon/human/dummy/new_human = new(get_turf(src))
+	var/mob/living/carbon/human/new_human = new(get_turf(src))
 	new_human.real_name = ghost_to_spawn.real_name
 	new_human.alpha = 150 //Makes them translucent
 	new_human.color = "grey" //heh..cult greytide...litterly...
@@ -985,10 +985,15 @@ var/list/teleport_runes = list()
 	ticker.mode.add_cultist(new_human.mind, 0)
 	to_chat(new_human, "<span class='cultitalic'><b>You are a servant of [ticker.mode.cultdat.entity_title3]. You have been made semi-corporeal by the cult of [ticker.mode.cultdat.entity_name], and you are to serve them at all costs.</b></span>")
 
+	var/i = 0
 	while(user in get_turf(src))
+		i++
 		if(user.stat)
 			break
-		user.apply_damage(0.1, BRUTE)
+		if(i > 60)
+			user.apply_damage(2, BRUTE)
+		else if(i > 30)
+			user.apply_damage(1, BRUTE)
 		sleep(3)
 
 	qdel(N)