Hi, I don't know how the game calculates rounding for its probabilities, but I had a scroll with a 100% chance to retain after use. I had Runic Lore Advanced and two jewelries with Unyielding Script, which give each +50% chance a scroll is not destroyed on use. The scroll itself said 100% chance to retain, but after using it a couple times it dissapeared anyway. Is the rounding inaccurate or is it a bug with th actual usage of the scroll?