Increased zigur parties rarity a bit

git-svn-id: http://svn.net-core.org/repos/t-engine4@6355 51575b47-30f0-44d4-a5cc-537603b46e54

game/modules/tome/data/general/encounters/maj-eyal-npcs.lua

@@ -114,7 +114,7 @@ newEntity{
 	level_range = {14, nil},
 	faction = "zigur",
 	sight = 1,
-	rarity = 4,
+	rarity = 6,
 	unit_power = 20,
 	hates_arcane = 1,
 	movement_speed = 0.75,