Bane, God of Tyranny

Invincible Conqueror. Bane has resistance to all damage and scores critical hits in 19 and 20

Great Weapon Fighting Style. Bane re-rolls 1s and 2s

Aura of Protection. Bane and his allies within 30 feet gain a +8 to all saving throws. They also gain resistance to damage from spells

Spellcasting. Bane is a 20-level spellcaster. Its spellcasting ability is Charisma (spell save DC 25, +17 to hit with spell attacks). Bane has following Paladin spells prepared:

1st level (4 slots): Command, Detect Magic, Searing Smite, Thunderous Smite, Wrathful Smite, Armor Of Agathys

2nd level (3 slots): Branding Smite, Hold Person, Locate Object, Spiritual Weapon, Zone of Truth

3rd level (3 slots): Bestow Curse, Blinding Smite, Crusader's Mantle, Daylight Dispel Magic, Fear

4th level (3 slots): Death Ward, Dominate Beast, Stone-Skin

5th level (2 slots): Banishing Smite, Cloud Kill, Destructive Wave, Dominate Person, Geas, Holy Weapon

Multi-Attack. Bane makes 3 weapon attacks

Holy Avenger. Melee Weapon Attack: +22 to hit, reach 20 ft., one target. Hit: 32 (4d6 + 1d8 + 13) [Slashing] damage. 

Spear. Melee Weapon Attack: +22 to hit, reach 20 ft., one target. Hit: 3 (5d8 + 13) [Piercing] damage. 

Spear Throw. RangedWeapon Attack: +17 to hit, range 40/80 ft., one target. Hit: 18 (4d6 + 1d8 + 8) [Piercing] damage.

At the end of another creatures turn Bane may use one of his legendary actions. He has 5. he regains all legendary actions at the start of his turn.

Sword Strike (Costs 1 Action). Bane makes an  attack with his Holy Avenger

Spear Throw (Costs 1 Action) Bane makes an ranged attack with his spear

Cast Spell (Cost 1 Actions) Bane may cast 1 Spell from his spell list with a casting time of 1 action

Divine Cast ( Costs Spell level +2 Actions) Bane may cast a spell without expending a spell slot.