High Justice Grimstone

When a player stands on the mesh circle at the center of the Ring of the Law inside Blackrock Depths, it starts a plot event. The entrance to the ring is closed, and High Justice Grimstone appears in the ring. This Dark Iron dwarf is flagged red, but cannot be attacked; his purpose is to explain what is about to happen.

When he teleports out of the ring, he uses a spell called Ashcrombe's Teleport which appears as a debuff, perhaps referring to Sorcerer Ashcrombe.

See Blackrock Depths NPCs.