Xepherina, The Fallen One

Fallen Weapons. Xepherina's weapon attacks are magical. When Xepherina hits with any weapon, the weapon deals an extra 3d4 Radiant damage.

Divine Awareness. Xepherina's knows if she hears a lie.

Innate Spellcasting. Xepherina's spellcasting ability is Charisma (spell save DC 20). She can innately cast the following spells, requiring no material components:

At will: Detect Evil and Good, Invisibility (self only), Holy Missile,

3/day each: blade barrier, dispel evil and good, resurrection, forceful blast

1/day each: commune, control weather, beckon

Magic Resistance. Xepherina has advantage on saving throws against spells and other magical effects.

Victile Taste. Xepherina's weapon, Vitae ad Mortae, steals the life of those it hits (life stolen is equivalent to a quarter of the damage dealt, rounded down.) and deals an extra 1d4 bleed damage at the end of their turn, for the next 3 turns after a successful hit.

Legendary Resistance. (3/day) If Xepherina fails a saving throw, she can choose to succeed instead

Book of Heretical Atrocity. Xepherina keeps a book of those who have died by her hand, and within the last 100 years, she is able to summon 1d6 lesser undead (Zombies, skeletons, ghouls) or summon a specific NPC for 2 action points (if the NPC was killed by her, she may summon them without restriction, if not she may only summon those who have died within the last 100 years).

Quick thinking. Xepherina makes two actions per turn.

Greatsword. Melee Weapon Attack: +15 to hit. reach 10 ft., one target 4d10 + 10 slashing damage 

Furious Thrust. Xepherina flys forward 30 ft. thrusting her greatsword forward, any target within range must make a DC 20 dex check and take  5d10 piercing damage on a failed one.  

Punch. Xepherina punches a target within 5 ft. of her, dealing 5d8 + 8 bludgeoning damage + 2d4 radiant damage. +15 to hit.

Xepherina can take 4 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. Xepherina regains spent legendary actions at the start of its turn.

 Overwhelming Radiance. Xepherina releases a surge of dark and light energy, overwhelming senses of anything within its lair. Everything except Xepherina must make a DC 20 Constitution saving throw and be prone until the end of their next turn on a failed one.

Battlefield Dominance. Xepherina unleashes a forceful wave, forcing everything 1d6 spaces in a direction of her choosing.

The Fallen Shall Rise. Xepherina resurrects 2d6 lesser undead, or 2 dead NPC's from within the last 100 years to fight for her. If specific NPC's are resurrected then their names are removed from the book and cannot be summoned again.

Might of the Dead. Xepherina slashes her sword in the air, expelling from it an arc of lost souls (the arc is a cone type object, 30 ft. by 30 ft. can only reach 30 ft.) dealing 3d10 psychic damage to anything caught within the souls.