Credence Wolfgang

Assassinate. During its first turn, the assassin has advantage on attack rolls against any creature that hasn't taken a turn. Any hit the assassin scores against a surprised creature is a critical hit.

Evasion. If the assassin is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, the assassin instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.

Multiattack. The assassin makes two shortsword attacks and one crossbow attack.

Hidden Sword. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 10 (1d8 + 6) piercing damage,

Heavy Crossbow. Attack: +10 to hit, range 100/320 ft., one target. Hit: 10 (1d10+ 5) piercing damage. The fireball spell is cast on the location at third level(DC 15 saving throw).