A skeleton dropped me a gift:
If the image is missing, it's an arcane scroll (projectile protection)
And it got me to wondering if "random and very rare" is really the best way for these to drop. Didn't Battosay's recent video have a giant kickass mobtrap not dropping even one, out of what, thousands of items? I'm hoping for some discussion on the pros and cons of the current system, really - to me it feels a bit too luck-based, and arguably encourages AFK play since you need a fair bit of luck even after you apply your skills to make a mob-grinder.