The highest-risk PvM on the server: six bosses, the rings, the Voidwaker pieces and the wards.
The Wilderness boss roster is the highest-risk PvM on Ashmarch. Every one of these is in multi-way or deep Wilderness, every one of them can be interrupted by another player, and the drops are priced accordingly — the rings, the Voidwaker pieces and the wards all come from this list.
The roster
Boss
Combat
Hitpoints
Where
Callisto
470
1,000
Level 40+ Wilderness
Venenatis
464
900
Level 30+ Wilderness
Vet'ion
454
510
Wilderness graveyard
Scorpia
225
400
Scorpia's cave
Chaos Fanatic
202
250
Deep Wilderness
Crazy archaeologist
204
200
Deep Wilderness
You are not the only threat here. Assume a PKer will arrive at the worst moment of the fight, and bring exactly what you can afford to hand over — because sooner or later you will.
Callisto and Venenatis have the deepest health pools on the list and take the longest, which also makes them the ones you are most likely to be caught at. Chaos Fanatic and the Crazy archaeologist are much shorter kills and a far more sensible place to start learning the Wilderness roster.
The Ring of the gods, the Tyrannical ring and the Treasonous ring drop from Vet'ion, Callisto and Venenatis respectively, and every one of these bosses can drop the long and curved bones.
Drop table
Taken straight from Ashmarch's own drop data. Rates are per kill on Regular mode with no drop-rate bonus.