Overall changes to War Domain:
- Existing Guided Strike & War God's Blessing removed
- Set Domain Spells removed, replaced with choices from the Paladin spell list
- Progression extended to level 20

This subclass has progression to level 20. You don't need a mod to increase the level cap, you just won't get the level 13-20 features

Changes to War Domain progression:
- Level 1: Choose 2 spells from the Paladin spell list, 1st level, always prepared
- Level 2: Learn 1 Fighting Style available to Paladins; Challenge: Compelled Duel with no save, lasts 5 turns
- Level 3: Choose 2 spells from the Paladin spell list, 2nd level, always prepared
- Level 5: Choose 2 spells from the Paladin spell list, 3rd level, always prepared
- Level 6: Casus Belli: Gain Advantage on Attack rolls against an enemy, lasts 5 turns
- Level 7: Choose 2 spells from the Paladin spell list, 4th level, always prepared
- Level 8: Divine Strike: Weapon
- Level 9: Choose 2 spells from the Paladin spell list, 5th level, always prepared
- Level 10: Aura of the Warmonger: The cleric & allies within 3 meters (10 feet) have their Critical Hit threshold reduced by 1, the aura has the same visual effect as Guardian of Faith, as demonstrated in Visible Aura of Protection
- Level 12: War God's Favour: A permanent Divine Favour (can be toggled off)
- Level 14: Divine Strike: Weapon: Damage increased to +2d8
- Level 16: Avatar of Battle: Permanent resistance to physical damage
- Level 18: War God's Favour: Damage increased to +1d8
- Level 20: Aura of the Warmonger: radius increased to 9 meters (30 feet)

War Priest:
- War Priest charges reset on short rest
- War Priest attack bonus action requirement removed
- I've used the same method that Zero3042 did in their excellent War Domain Improvements

War Priest Charges:
- Level 1: 1st War Priest Charge
- Level 3: 2nd War Priest Charge
- Level 5: 3rd War Priest Charge
- Level 7: 4th War Priest Charge
- Level 9: 5th War Priest Charge
- Level 11: 6th War Priest Charge
- Level 13: 7th War Priest Charge
- Level 15: 8th War Priest Charge
- Level 17: 9th War Priest Charge
- Level 19: 10th War Priest Charge

Divine Strike: Weapon:
- Fixes base game bug allowing Divine Strike to be used multiple times per turn
- Fixes base game incorrect icons
- Extra damage is magical
- Extra damage increases at level 14

Paladin spell list for 4th & 5th level:
4th Level:
- Aura of Life
- Aura of Purity [Rules as written except it doesn't provide advantage against Blinded or Stunned]
- Banishment
- Death Ward
- Staggering Smite
5th Level:
- Banishing Smite
- Circle of Power [Rules as written except that the saving throw damage reduction only works on spells with a DEX save]
- Destructive Wave
- Dispel Evil and Good
- Holy Weapon