Assassinate. The novice assasin has advantage on attack rolls against any creature that hasn't taken a turn in the combat yet. In addition, any hit the novice assasin scores against a creature that is surprised is a critical hit.   Sneak Attack (1/Turn). The novice assasin deals an extra 3d6 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 novice assasin that isn’t incapacitated and the novice assasin doesn’t have disadvantage on the attack roll.