From AEG:
To celebrate the end of the campaign we have been unlocking Stretch Goals toward a 5th Quest, A Grand Finale, featuring artwork from previous Thunderstone sets.
As of midnight we have unlocked 22 Stretch Goals for this Quest. As you may know if you are a regular Kickstarter, the final day of a successful campaign can have dramatic momentum. We’re looking forward to seeing how many backers join the Thunderstone Quest campaign before it ends, unlocking more and more of the Stretch Goals for A Grand Finale!
The value we’re offering in the campaign will be unmatched compared to the eventual retail release of Thunderstone Quest. The Champion Reward ($100 Pledge) consists of all the components needed to play the game, 4 Quests of 243 cards each, a Premium Storage Box, and 9 additional Stretch Goals of content with approximately 100 more cards! If all the Grand Finale Stretch Goals are achieved that will add an additional 243 card Quest to the Reward!