I surveiled 2 cards with Corroding Dragonstorm. It showed two cards, a basic swamp and Felothar. I adjusted the top card to be swamp and left them both on top. When it came to my draw, I drew Teeming Dragonstorm instead of Swamp. The next turn I drew Piercing Exhale. Two completely different cards then I surveiled. I did not put them in the graveyard, and no effect happened to shuffle the library. Because of this, I couldn't play Ugin which is what I left the swamp on top for and lost the game and the draft.