diff --git a/common/decisions/wc_thorium_decisions.txt b/common/decisions/wc_thorium_decisions.txt
index d497a34e32..ff40d737bf 100644
--- a/common/decisions/wc_thorium_decisions.txt
+++ b/common/decisions/wc_thorium_decisions.txt
@@ -1,12 +1,16 @@
 # Warcraft
 thorium_invite_craftsmen_decision = {
-	ai_check_interval = 6
+	ai_check_interval = 24
 	picture = "gfx/interface/illustrations/decisions/wc_dark_iron_dwarf.dds"
 	desc = thorium_invite_craftsmen_decision_desc
 	selection_tooltip = thorium_invite_craftsmen_decision_tt
 
 	cost = {
+		prestige = 250
+		piety = 250
 	}
+	
+	cooldown = { days = 3650 }
 
 	is_shown = {
 		is_ruler = yes