Arcane Trickster

Cunning Action. On each of its turns, the arcane trickster can use a bonus action to take the Dash, Disengage, or Hide action.

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

Sneak Attack (1/Turn). The arcane trickster deals an extra 14 (4d6) damage when it hits a target with a weapon attack and has advantage on the attack roll, or when the target is within 5 feet of an ally of the arcane trickster that isn't incapacitated and the arcane trickster doesn't have disadvantage on the attack roll.

Spellcasting. The arcane trickster is an 8th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 13, +5 to hit with spell attacks). It has the following wizard spells prepared:

Cantrips: fire bolt, mage hand, minor illusion

1st level (4 slots): shield, silent image, Tasha's hideous laughter

2nd level (2 slots): mirror image, invisibility, phantasmal force

Multiattack. The Arcana Trickster has 2 rapiers to attack with. 

Rapier. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d8 + 3) piercing damage. 

Uncanny Dodge. The arcane trickster halves the damage that it takes from an attack that hits it. The arcane trickster must be able to see the attacker.