Creed assassin

Surprise attack. If the creed assassin surprises a creature and hits it with an attack during the first round of combat, the target takes an extra 7 (2d6) damage from the attack.

Disengaging save. When the creed assassin reaches less than half its lives, it makes a DC 13 dexterity saving throw. If the saving throw is successful then the assassin can disengage. While the assassins disengaged it can roll a 1d8 dice and add the number to its lives.

Poison. If the creed assassins first attack hits, roll a d20. If the number is below 10 plus the targets Constitution saving throw the target takes 5 (2d4) poisoning damage per turn. The target may make a Constitution saving throw at the end of their turn to end the effect early.

Multiattack. The creed assassin can make two melee attacks

Dagger. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit: 6 (1d4 + 4) piercing damage. 

Hand crossbow. RangedWeapon Attack: +3 to hit, range 30/120 ft., 1 target. Hit: 6 (1d6 + 3) piercing damage.