- When you sell or exchange Scrolls, you do not retain a copy;
- Scrolls disappear after you discover the Lost Art they were required for;
- If you use the "Sell All Scrolls" option at the House of Scrolls, you irreversibly sell all your available Scrolls;
- If you make an Offer to exchange a Scroll, it becomes unavailable for 3 days. In order to cancel the offer, go to the Market - "Caravans" tab, and select the "Decline" option in the "Loaded Caravans" section.
To unlock special Vampire Units, you need to discover Lost Arts that require unique Scrolls that can be purchased only with Soulstones. These Scrolls can be purchased at the Black Market, "Soulstones" section.