Grizzled Jarl is a Magic affinity epic champion from the Dwarves faction. Grizzled Jarl is often a lot stronger than people expect with a hard hitting A1, great utility and an AOE decrease Atk. The Dwarves faction is tough to face end bosses in Faction War and Grizzled Jarl will beat most legendaries onto the team sheet especially with his Block Debuff ability. This same ability is strong for Spider 20, Clan Boss and Ice Golem.
Overall Grizzled Jarl is a great champion and undervalued in Raid: Shadow Legends.