Interesting crazy drop lol

So I'm pretty new to the game and I'm not sure if links are allowed on this forums but I'll post it anyways sorry in advanced if we aren't allowed but I was just running though my Cruel Labyrinth and I guess I killed a Zombie and a whole bunch of Scrolls of Wisdom's dropped. Is this some kind of bug or just a crazy loot explosion :p


https://i.imgur.com/YjVbNfY.jpg

"Keeper of wisdom" darkshrine

Oh I didn't realize that well thats pretty cool thanks.