After discovering your first few Lost Arts, you will need to collect sets of Scrolls to be able to discover higher level Lost Arts. You will receive a new Scroll from your Scribe every day you play, but you must have the complete set of Scrolls for any given Lost Art before you are able to discover it.
You may also acquire missing Scrolls from the House of Scrolls – just select the Scroll you wish to purchase and confirm your decision.
Once you have discovered all the Lost Arts that do not require Soulstones, you will receive a bonus. The following day, it will be applied. Your Gold and Iron production will be increased by 7%.