I attacked with a creature triggering Doors of Durin and scry 2 with a mountain and mithril coat that I bottomed, revealing a 2 mana creature that i put on the battlefield. I then drew a creature next turn and again attacked triggering doors of durin and the 2 cards were mountain and mithril coat again. They should have been on the bottom of my library with no search effects or shuffle effects affecting the ordering on my cards.