This is the procedure for farming Ice Dragon Bone: First, go to the location I showed you in the video to find the dragon skull. Once you find it, press the loot button to pull up the loot screen. Highlight only the dragon bone itself. DO NOT highlight take all. After you hightlight the dragon bone, press A and B simultaneously on your Xbox One controller or X and O on PS4. Afterwards you should hear that faint coin chinging sound that you hear when you loot anything else. You will notice that the activate button is still showing on the skull. Immediately pull up your inventory and be sure the ice dragon bone was added. Next, immediately pull up your map and travel to an area other than the frostback basin. Then, travel back to the skull and you should be able to loot again. Just remember, after you press A and B, check your inventory and immediately travel to another location. Do this each and every time. Once you get tired of farming, you can come back later and farm some more as long as you have followed these steps.
Dragon Age: Inquisition - How To Farm Ice Dragon Bone [Infinite Amount]