Rogue Tactics
Assassination
You are at your deadliest when you get the drop on your enemies. Assassination tactics give you the following abilities:
Assassin’s Gambit. As a bonus action, you can make your next sneak attack on this turn a critical hit, if the sneak attack is:
a melee weapon attack.
made against a creature that is incapacitated or restrained.
First Blood. On your first round of combat, you have advantage on melee attack rolls against any creature that hasn’t taken a turn in that combat yet. Your sneak attack with a melee weapon attacks is also an automatic critical hit, if the target is surprised.