Rarity

Out of the 11 times I have done it, I only have 5 Pages. so its basically a hit and miss kind of thing. Its not super low rate but I guess this would work about the same as if someone killed it and dropped the item, I would say, everyone is basically fighting for it and thats why the drop rate is low...I got most of the pieces during times when there was less people.

but in a math kind of terms, you might only get 1 every 3 or so spawns. if your lucky, you might get it at every 2 spawns.