Conquest

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.

Displacement. at the start of Conquests turn, until they are hit, all attacks against them are at disadvantage.

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

Nemesis Marker. As an action, while carrying Nemesis, Conquest can call out a persons name that they can see or imagine in their mind.  This person is marked by Nemesis, until he uses an action to dismiss the marker, or until that person is killed.  When a marked creature or person is hit by Nemesis with an attack, that creature takes an additional 15 (5d6) damage.

Nemesis strike. at the start of Conquests turn when they attack with Nemesis against a marked target they can forfeit movement and all other actions to make a single attack with Nemesis.  their attack has a -10 to the roll, on hit however, they deal an extra 30 damage on top of any damage rolled.

Sneak Attack. Once per turn, Conquest 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 him that isn't incapacitated and doesn't have disadvantage on the attack roll.

Unque Magic Item. Nemesis, +3 leather armor, Clock of Displacement

Multiattack. The assassin makes two shortsword attacks.

Shortsword. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) piercing damage and the target must make a DC 15 Constitution saving throw, taking 24 (7d6) poison damage on a failed save, or half as much damage on a successful one.

Nemesis (Shortbow). Ranged Weapon Attack: +12 to hit, range 80/320 ft., one target. Hit: 10 (1d6 + 7) piercing damage.