It's a level 700 monster. What the fuck did you expect?
I personally expect at least one 200m drop every time I kill it.
guys pls stop making fun, i am serious, i would expect 1/300 drop rate not 1/500 since this monster is hardest to kill..
Dude, you should be happy with 1/500. Remember that Corp drops 4 different sigils with their individual drop chances, so the drop chance for ANY sigil is around 1/125. That's a lot more common, isn't it?
There's this boss in RS called Vorago. Killing him can take anywhere from 10 minutes to 20 minutes, depending on how good your team is. He drops some magic weapons and a pet. That pet has a
1/5000 drop chance. 1 out of fucking 5000! Those weapons aren't common either.
Killing corp takes what, 1 minute with one friend? Spirit shields are cheap enough already, no need to make them even cheaper by making the boss even easier and drops even more common.