A new Blood Voyage is summoned after each Death Night. When the Blood Voyage is destroyed, Har Ganeth gets money from their plunder and murder. Units in Blood Voyages have Frenzy in battle, are fairly high tier (depends on Hellebron's level but is usually rather good) and the lord is unbreakable, but the army cannot replenish losses like a normal army.
The Blood Voyage is marked by a red storm cloud over the leader's unit.
When the Blood Voyage is defeated or disbanded, Har Ganeth (if you are playing as it) receives an amount of loot.
When playing as Avelorn, Blood Voyages may periodically spawn from North of Ulthuan as a frequent enemy, slowly marching towards Shrine of Khaine before attacking it. Note that this faction is extremely suicidal, will not attempt to flee on the campaign map, will charge their head in the first settlement that they can reach (usually Shrine of Khaine) and will only attack Ulthuan settlements owned by whoever they're at war against.
