Cunning Action. Agrissa can take a bonus action on each of her turns to take the Dash, Disengage, or Hide action.

Magic Fans. Agrissa's bladed fan attacks count as magical for the purpose of overcoming resistances.

Multiattack. Agrissa makes two Bladed Fan attacks, or uses Rhythmic Flurry.

Bladed Fan. Melee Weapon Attack: +9 to hit, reach 5 ft., 1 target. Hit: 8 (1d4 + 8) slashing damage. 

Rhythmic Flurry (Recharge 5-6). Agrissa's strikes accelerate to vicious speeds, and the area around her becomes a cyclone of steel. She makes one Bladed Fan attack against all creatures within ten feet, ending next to a creature of her choosing. While moving between targets, Agrissa expends no movement, and does not provoke opportunity attacks.

Steely Riposte. When a creature you can see hits you with an attack, you can use your reaction to halve the attack's damage against you.