The Adepta Sororitas, colloquially called the "Sisterhood," whose military arm is also known as the Sisters of Battle and formerly as the Daughters of the Emperor, are an all-female division of the Imperium of Man's state church known as the Ecclesiarchy or, more formally, as the Adeptus Ministorum.

Sisters of Battle are colloquially all female, serving as the military arm of the Imperial Church. Their equipment typically consists of power armor, heavy weapons, and miracles granted by the mercy of the God-Emperor.

Level 3: Sister of Battle Spells

The magic of your oath ensures you always have certain spells ready; when you reach a Paladin level specified in the Sister of Battle Spells table, you thereafter always have the listed spells prepared.

Sister of Battle Spells

Paladin Level	Spells
3	Protection from Evil and Good, Shield of Faith
5	Aid, Zone of Truth
9	Beacon of Hope, Dispel Magic
13	Freedom of Movement, Guardian of Faith
17	Commune, Flame Strike

Level 3: Miracle Dice

Following a Long Rest, roll 1+profiency modifier of D20 dice. As you grow in power and levels, you gain additional miracle dice according to your proficiency modifier. These dice will be put to the side for later use, and any dice that rolls lower than a 7 becomes and 7 instead.

These Dice can be substituted for Attack rolls, Skill checks, or Saving throws. You may replace any of these checks with your dice at any moment.

You can gain more Miracle dice by performing acts of faith. These acts of faith can range from slaying enemies of the imperium, rescuing subjects of the imperium in need, or just by helping your teammates. The God-Emperor emphasizes that they must be teammates. Specific combat examples below.

Whenever a friendly creature is downed, you gain a miracle die.

Whenever you deny an enemy witch of their psychic powers (An enemy spellcaster), you gain a miracle die.

You can use a reaction to tank a hit that would cause a friendly creature to become downed, and doing so grants you a miracle die.

Finally, you may also give one miracle die to a single ally of your choice within 30 ft with a bonus action.

Level 7: Shield of Faith

Starting at 7th level, you gain the ability to negate enemy attacks. As a reaction to an attack, you may activate Shield of Faith. Roll a d10, and if the roll is a 6 or above, the attack is nullified against you (Does not nullify the entire AoE). These include attack rolls and save DC spells. If the roll is a 5 or below, the attack occurs like normal. You may use miracle dice on this nullification.

This may only occur once per short rest, unless miracle dice are used.

Level 15: The Triumph of Saint Katherine, Emperor's Faith

Praesidium Protectiva was the greatest shield, held by Saint Katherine herself, containing a shard of the Emperor's Power Armor. At 15th level, you gain the ability to temporarily call upon this mighty power, imbuing yourself with defensive strength beyond imagination. 

For 3 turns, you gain +1 AC, gain 15 hit points at the start of your turn, gain advantage on Con saves, and you can choose to take on any number of attacks meant for allies. This is available once per long rest.

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If you start a Combat encounter with no miracle dice, gain 1 miracle dice. 

Level 20: Our Maytred Lady

At 20th level, the divine body of a Sister of Battle ascends to that of a Living Saint, opening a true connection to The Emperor's Grace. This connection grants the user a pair of angelic wings that allow you to fly at a speed equal to 3x your normal walking speed with perfect grace.

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You gain the ability to call upon the Emperor's Grace, the light of Him on Terra filling your body to smite his worst foes.

For 1 minute, you gain +3 AC, an extra attack, gain 30 hit points at the start of your turn, you gain advantage on Con saves, you gain resistance to all damage, and can take any amount of damage meant for allies, even AoEs.