At a glance
- Type
- Legendary Lord
- Battlefield role
- Melee lord and bear cavalry leader
- Content pack
- Total War: Warhammer III (base game)
- Race
- Kislev
- Faction
- Ursun Revivalists
Availability
Content pack: Total War: Warhammer III (base game). Immortal Empires ownership
- Included with Total War: Warhammer III. Patch 6.1 removed the quest-battle prerequisite for selecting Boris in Immortal Empires.
Select the Ursun Revivalists
Choose Kislev and the Ursun Revivalists in Immortal Empires. Boris is a separate campaign leader from his daughter Katarin and from Kostaltyn; he commands his own faction rather than joining one of their armies as a hero.
Warhammer III owners can select him directly in Immortal Empires after the patch 6.1 change. Completing the old Realm of Chaos rescue battle is no longer an entry requirement for this sandbox campaign.
SEGA’s Immortal Empires ownership guide, updated 18 June 2026, lists Boris Ursus with Tzarina Katarin and Kostaltyn under the Warhammer III base game. Mother Ostankya is the Kislev lord sold under Shadows of Change. His Revivalist campaign is a base-game start.
Faith and the shared Kislev campaign
Boris's identity is rooted in the revival of Ursun's worship and preparation for war against Chaos. His faction still uses the shared Kislev campaign systems: Court & Orthodoxy, provincial Devotion, invocations and Ataman governors.
A field army and a secure province solve different problems. Develop recruitment behind the army and use your governors to help defend territory, so that a successful advance does not leave your settlements dependent on Boris returning to every border.
Boris and the bear cavalry
Use Boris as a melee leader supported by the formation around him. War Bear Riders provide a natural mounted element for his army, but an entire force still needs ways to engage different targets and protect its missile troops.
Keep the cavalry close enough to help when enemy large units threaten the line. Once those attackers are occupied, Kossars and Streltsi can shoot into a useful angle. Avoid leaving Boris and the bears in one distant fight while the rest of the force faces another.
Magic and religious support
A Frost Maiden provides spellcasting that Boris does not supply himself. A Patriarch supports the fighting troops through hymns. Choose their positions around the main engagement and keep a route for the caster to withdraw from fast attackers.
Katarin offers an Ice spellcaster's approach to Kislev, Kostaltyn a religious support leader, and Mother Ostankya a witchcraft campaign. All share the race, while ownership and faction mechanics distinguish their campaign choices.
Start position and first turns
Boris starts away from Katarin and Kostaltyn, in the Zorn Uzkul region with only part of a province under his control. Greenskins nearby are at war with him from the first turn, and a settlement to the south that looks abandoned holds Skaven.
Deal with the Greenskins before expanding, then take the empty mountain settlements and clear the Skaven. Another Kislev faction across the mountains is a candidate for confederation once your own province is safe.
War Bear Riders and Kossars suit his opening army: the bears meet enemy cavalry and monsters while the Kossars shoot and hold. Boris himself is a melee lord, so pair him with a Frost Maiden for magic.
Questions
How do you unlock Boris Ursus?
Boris is included with Total War: Warhammer III. Since Patch 6.1 you can select the Ursun Revivalists directly in Immortal Empires without completing the old quest battle.
Does Boris start near Katarin and Kostaltyn?
No. His start is separated from the other Kislev factions, with hostile Greenskins close by.
Sources
- Immortal Empires DLC Ownership Guide — support.sega.com
- Patch Notes 6.1 — Creative Assembly — community.creative-assembly.com