Tasha's Hideous Laughter
A creature of your choice that you can see within range perceives everything as hilariously funny and falls into fits of laughter if this spell affects it. The target must succeed on a Wisdom saving throw or fall prone, becoming incapacitated and unable to stand up for the duration. A creature with an Intelligence score of 4 or less isn't affected.

At the end of each of its turns, and each time it takes damage, the target can make another Wisdom saving throw. The target has advantage on the saving throw if it's triggered by damage. On a success, the spell ends.

As a bonus action, he will use the feature Hexblade’s Curse Once per short rest, as a bonus action, choose one creature you can see within 30 ft. to curse it for 1 minute (or until the target dies, you die, or you are incapacitated). Against the cursed target, you gain a 4 bonus to damage rolls, score a critical hit on a roll of 19 or 20, and you regain +6 HP if it dies.
Then double attack. With 2 levels in Hexblade Warlock I use my Cha bonus for attacks and damage rolls instead of Str or Dex.

I get 30 feet closer to you and I cast
Command  (Wis save DC 16):
You speak a one-word command to a creature you can see within range. The target must succeed on a Wisdom saving throw or follow the command on its next turn. The spell has no effect if the target is undead, if it doesn't understand your language, or if your command is directly harmful to it.

Some typical commands and their effects follow. You might issue a command other than one described here. If you do so, the GM determines how the target behaves. If the target can't follow your command, the spell ends.