Do Abrogator Stones drop from bosses or trash?

[Twilight Cultist]

I know it is probably only from bosses, but I am just curious.

[Ballpooner]

We only received them from bosses tonight. It should also be noted that we received two off of some bosses (Brackenspore & Tectus, I believe). I am unsure if you are able to acquire them from multiple difficulties as well.

[Larynx]

Received 5 off of the Butcher, actually. The entire raid did.

[MSTRKRFT]

I guess Heroic drops more I know Larynx did Heroic (on same server as him). My guild started with normal and we got 2 on Kargath, butcher, and Brakenspore

[kansas311]

I got 3 from the first two and then a cluster which contained 5 when I opened it from the 3rd in highmaul.

This was on norm.

[Hottie4Hire]

1 on each of the first three bosses.

[InkarnateKT]

Killed all 7 bosses on normal. Received about 1-2 stones per boss. Chance for bosses to drop a cluster which contains 5. Received about 15 for the 7 bosses.

[Krazzorx]

Everyone seems to get the same amount per boss, though the amount per boss appears random. It's non-annoying rng since you are guaranteed stuff unlike mop legendaries.

Few enough drop that the follower missions which award them will make a difference.

[Deleted]

Only got one from each Kargath and Butcher on normal, but maybe just unlucky.