The Sundering: Rise of the Witch King is a mod for Medieval 2: Kingdoms and based around the fantasy world of Game workshop's Warhammer universe during the civil war between the Elves, the mod's campaign opens with the Death of Bel Shanaar in -2751 IC.
<<We must be ever-vigilant, for if we become unwary and weak the enemies of mankind will devour us utterly. Place your faith in Sigmar to protect you, place your trust in your Emperor to lead you, and put your strength in your sword to deliver you from those who would destroy your Empire>>
Clad in ceremonial vestments and armour adorned with religious icons, Warrior Priests smite creatures of darkness with righteous fury. The Cult of Sigmar demands that its followers fight all forms of evil with martial feats as well as with faith, so many of its priests accompany the Empire's armies as they march to war. A Warrior Priest can summon their faith to lend steel to their blows in combat, destroy creatures of darkness or shield themselves from harm. Woe betides the foe facing an army filled with such divine power.
If evil is overwhelming you and your foes are suddenly confident of victory, then your Warrior Priest will have a nasty surprise in store for them. Drawing upon his loyal faith in Sigmar, he will help increase his unit's resilience against enemy onslaught. What's more, his prayers will inspire his unit's ability to hurt your enemy. And if that doesn't work, he's also got a massive hammer to hit them with.