Feline Agility. Double her speed once and regain this ability after not moving for one turn

Dark One's Blessing. Reducing someone to 0 Hostpoints gives her 18 temporay HP

Dark One's Own Luck. You can use D10 one a saving throw.

Eldritch Smite (2/ Rest). Add 3d8 force damge on a Blood Blade attack.

Pact of the Blood Blade. She summons a Blade made out of her own Crystalised Blood. Which she channels the will of Zarya, she can use Charisma instead of Strength.

If the Blade is more than 5 ft. away from her, it will disapear.

Spellcasting. The Vivian Rakuga is a 5-level spellcaster. Its spellcasting ability is Charisma (spell save DC 16, +8 to hit with spell attacks). The Vivian Rakuga has following Warlock spells prepared:

At will: Magehand, Bonfire, Minor Illusion, Detect Magic 

1/day: Mass Suggestion, Planeshift

Multiattack. Vivian Rakuga makes to Blood Blade attacks.

Blood Blade. Melee Weapon Attack: +#8 to hit, reach 5 ft., 1 target. Hit: 10 (1d8 + 5) slashing damage plus 5 nectrotic damage. 

Eldritch Blast. RangedWeapon Attack: +8 to hit, range 120 ft., 3 targets. Hit: 11 (1d10 + 5) force damage.