Casiano

Lucky. When you roll a 1 on the d20 for an attack roll, ability check, or saving throw, you can reroll the die and must use the new roll.

Halfling Nimbleness. You can move through the space of any creature that is of a size larger than yours.

Brave. Casiano have advantage on saving throws against being frightened. 

Gift of the Gamble. Once at the start of Casiano's turn, she can roll a 1d20 and record the roll. Until the end of her next turn she can replace that roll with any attack, saving, or ability roll she or any of her enemies has done within 60 ft., from her. 

Spellcasting. Casiano is a 5th-level spellcaster. Its spellcasting ability is intelligence (spell save DC 15, +6 to hit with spell attacks). Casiano has following Wizard spells prepared:

Cantrips (at will): Mind Sliver, Shocking Grasp, Chill Touch, Blade Ward, True Strike

1st level (4 slots): Mage Armor, Ray of Sickness, Jim's Magic Missile, Distort Value

2nd level (3 slots): Tasha's Mind Whip, Blindness/Deafness, Crown of Madness, Blur

3rd level (2 slots): Slow, Blink, Counterspell

Poker Face. Casiano can force a creature that she can see within 30 ft., to make a DC 15 Charisma saving throw. On a failed save the creature has disadvantage on the next attack, ability, or saving throw they make. If they fail with 5 or more, they have disadvantage for the next minute. 

Quarterstaff. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 4 (1d6 - 1) Bludgeoning damage. 

Bust. When an enemy enters Casiano's reach, she can use her reaction to move up to her movement speed away without provoking an opportunity attack.