I literally pulled more briarheart daggers, than motif pages
ZOS
You need to re-evaluate the drop rates of the Ancient Orc Motif pages in both the Wolfgar Public Dungeons. To date I have ransacked both delves killing all bosses, mobs and checked every container I could find 6 times each solo many times not even running into any other players in the delves. I have yet to get one Ancient Orc Motif Page. Heck it could be my luck but I kind of doubt that especially after doing each 6 times. Come on ZOS your drop rates are totally ridiculous.
That's some fairly advance necromancy right there. There are much more recent threads than this on said issue. Try this one for example.
You can also find my fairly lengthy post on this issue on that thread, that should offer advice on how to farm them, and shed light to the mechanics behind it. The tl;dr of the thing however is, that they drop from bosses in Wrothgar Public dungeons. You have something like 3% chance of getting one when you kill a boss, and that there is a boss loot cool down involved making it pointless to kill more than one boss per 5 or so minutes. You can also get them from basic mobs, but that is like one in 10k chance of happening, so don't bother farming mobs. If one drops a chapter then cool, but do not bet on it happening even if you spend 100 hours farming them.
And yes, it is a ridiculously arduous chore, just like many many many other things that most people no longer farm. Easiest thing to do is to buy them from guild stores by farming gold. Expect to pay around 60k per chapter.