muadib

I am looking at crafting guides online and I keep seeing modifications being mentioned. I am currently in Egypt and there is no modification tab in my Forge. Is there something I missed to unlock it or an upgrade I need. I am not seeing anything in the upgrade menu. I have a forge and have upgraded and build items but no modify and I also see no way to craft the banner to mars, it does not appear in any of the armory menus. Same with the poison vial.