Eskil Ryndarien

Eskil Ryndarien, also known as the Realmseer, is one of the most powerful arcane practitioners in Tal'Dorei. As an NPC, he is played by Matthew Mercer.

Background
Eskil once worked within the circle of mages known as the Arcana Pansophical, but he left for unknown reasons. Until the Chroma Conclave attacked, Eskil lived in Westruun atop his ominous Greystone Tower. Before the Critical Role stream began, Vox Machina infiltrated this tower to steal one of his artifacts, but, upon meeting Eskil, they decided to abandon their mission and instead seek his aid in restoring Grog Strongjaw from his necromantic infection. Eskil agreed, and upon the party's return with the necessary materials, he extracted the proto-phylactery from within Grog's torso.

The blue crystal cell that was delivered to the Winter's Crest Festival (which subsequently detonated and froze the town) was supposedly gifted under Eskil's name. When Westruun recovered from its frozen state, Eskil was arrested and put on trial for his alleged connection with the attack. Vox Machina came to his aid, however, and proved his innocence. In return, Eskil aided the party in scrying the source of the crystal cell... which pointed to the Clasp from within Emon. Eskil then gifted the party with an artifact and sent them on their way.

On the Stream
After the Chroma Conclave attacked Tal'Dorei, Vox Machina encountered Eskil again, this time in Whitestone. The Realmseer was researching the Ziggurat beneath Castle Whitestone, attempting to determine what the Briarwoods had created with their ritual. When Vox Machina returned to Westruun, it was unclear whether Eskil's Greystone Tower survived.