Medical Resistance. (3/Day) When Vivian fails a Constitution, Wisdom or Strength saving throw, she may use a charge of this ability to succeed on the check instead. 

Adaptive Resistance. Upon taking damage Vivian gains resistance to the triggering damage type. This effect takes place after calculating the damage that triggers the response. If Vivian already has resistance to the damage type, she gains immunity instead. 

Multi-attack. Vivian can make three weapon attacks as an action using either her darts or stun rod. 

Stun Rod. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 11 (2d8 + 3) lightning damage. Target must succeed on a DC 14 Constitution saving throw or be restrained and unable to perform reactions until the end of their next turn.

Tranquilizer Darts. Melee Weapon Attack: +7 to hit, reach 80/200 ft., one target. Hit: 15 (3d10) poison damage. Target must succeed on a DC 14 Constitution saving throw or have their strength score reduced by 2d4. 

Elemental Absorption (3/day). As a reaction to taking fire, cold, lightning, thunder, or acid damage, Vivian can give herself resistance to that damage type. She may then grant herself 4 (2d4) temp hp.