Stalwart. While Sariel is conscious, she grants all friendly creatures (including herself) within 30 ft. a +4 bonus to all saving throws and are unable to be can’t be frightened.

Exalted Champion. Once per long rest, Sariel may become an avatar of the Aegis, and has resistance to bludgeoning, piercing, and slashing damage from nonmagical weapons, her allies have advantage on death saving throws while within 30 ft. of her, and she has advantage on WIS saving throws, as do her allies within 30 ft.

Spellcasting. Sariel is a 20th level spellcaster. Her spellcasting ability is CHA (spell save DC 19, +11 to hit with spell attacks). Sariel has the following Paladin spells prepared:

1st level (4 slots): Bless, Command, Compelled Duel, Searing Smite, Shield of Faith, Thunderous Smite, Wrathful Smite

2nd level (3 slots): Branding Smite, Warding Bond

3rd level (3 slots): Aura of Vitality, Blinding Smite, Crusader's Mantle, Spirit Guardians, Spirit Shroud

4th level (3 slots): Banishment, Guardian of Faith

5th level (2 slots): Banishing Smite, Circle of Power, Geas, Summon Celestial

Cleansing Touch. Sariel can use her action to end one spell on herself or on one willing creature that she touches 4 times per long rest.

Divine Smite. When Sariel hits with a melee weapon attack, she can expend one spell slot to deal 2d8 extra radiant damage to the target plus 1d8 for each spell level higher than 1st (max 5d8) and plus 1d8 against undead or fiends (max 6d8 total).

Lay on Hands. Sariel has a pool of healing power that can restore 100 HP per long rest. As an action, she can touch a creature to restore any number of HP remaining in the pool, or 5 HP to either cure a disease or neutralize a poison affecting the creature.

Healing Hands. Once per long rest as an action, Sariel can touch a creature and restore 20 hit points.

Radiant Soul. Once per long rest as an action, Sariel can transform, gaining glimmering eyes and two incorporeal wings. For 1 minute or until she ends it as a bonus action, she has a flying speed (30 ft.) and once per turn she can have one attack or spell deal 20 in additional radiant damage to one target. 

Action Melee Attack. Holy Avenger Greatsword: +14 to hit, reach 5 ft., 1 target. Hit: 12 (2d6 + 8) Slashing damage. 

Channel Divinity. Once per short rest, Sariel may perform one of the two actions: 

• Champion Challenge - As a bonus action, each creature of your choice within 30 ft. must make a WIS saving throw (DC 18) or it can't willingly move more than 30 ft. away from you.
• Turn the Tide - As a bonus action, each creature of your choice within 30 ft. regains 1d6 +4 HP if it has no more than half its max HP.

Divine Allegiance. When a creature within 5 ft. of Sariel takes damage, she can use her reaction to take the damage herself instead. This damage to her can’t be reduced or prevented in any way.

Trusted Guard. While wielding a shield and a creature Sariel can see attacks a target other than her within 5 ft., she can use her reaction to impose disadvantage on the attack roll.

Animated Shield. While holding this shield, Sariel can speak its command word as a bonus action to cause it to animate. The shield leaps into the air and hovers in her space to protect her as if she were wielding it, leaving your hands free. The shield remains animated for 1 minute, until she uses a bonus action to end this effect, or until she is incapacitated or die, at which point the shield falls to the ground or into her hand if she has one free.

Will of the People (Costs 1 Action). Sariel can heal 40 hit points.

Will of the Crown (Costs 1 Action). Sariel can make a single attack with Holy Avenger Greatsword.

Will of the Guardian (Costs 3 Actions). After being attacked, Sariel forces the attacker to make a DC 20 DEX saving throw. On a failed save, the attacker takes radiant damage equal to the damage they dealt to Sariel. On a successful save, the creature takes half damage.