Merge pull request #6986 from Citadel-Station-13/upstream-merge-38250

[MIRROR] [s]Fixes bloodcult exploit

code/modules/antagonists/cult/blood_magic.dm

@@ -64,7 +64,7 @@
 			qdel(nullify_spell)
 		return
 	BS = possible_spells[entered_spell_name]
-	if(QDELETED(src) || owner.incapacitated() || !BS)
+	if(QDELETED(src) || owner.incapacitated() || !BS || (rune && !(locate(/obj/effect/rune/empower) in range(1, owner))) || (spells.len >= limit))
 		return
 	to_chat(owner,"<span class='warning'>You begin to carve unnatural symbols into your flesh!</span>")
 	SEND_SOUND(owner, sound('sound/weapons/slice.ogg',0,1,10))