Sage's Scroll is a Key Item in Dark Souls 3.
Sage's Scroll Usage
- Near the Keep Ruins bonfire in Farron Keep. From the Keep Ruins bonfire, go out of the bonfire room towards the Wolf Gate. Hang a sharp left from the bridge, almost doubling back underneath the bridge that you just walked across. Go between the trees until you reach an area with a few ghrus and several dead mushrooms. The scroll is on one of the larger mushroom's corpse.
- Video location