Darkvision. Accustomed to twilit forests and the night sky, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of gray. 

Spellcasting. Vivien is a spellcaster. Her spellcasting ability is Intelligence (spell save DC 16, +7 to hit with spell attacks). Vivien has the following Wizard spells prepared:
Cantrips (at will): fire bolt, light, mage hand

1st level (4 slots): detect magic, magic missile, unseen servant, identify, find familiar

2nd level (3 slots): misty step, blindness, deafness, gust of Wind, locate Objekt

3rd level (3 slots): counterspell, fireball, fear, sending

Shortsword. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: (1d6 + 4) piercing damage.

Interception. When a creature you can see hits a target, other than you, within 5 feet of you with an attack, you can use your reaction to reduce the damage the target takes by 1d6 +2.