Trickster

You use your wits and deception to gain the advantage during battle:

• Increase your Intelligence or Charisma score by 1, to a maximum of 20.
• You learn one 1st-level spell of your choice from the enchantment or illusion school of magic. You can cast this spell once without expending a spell slot. Once you cast it in this way, you can’t do so again until you finish a long rest. You can also cast this spell using spell slots you have of the appropriate level. The spell’s spellcasting ability is the ability increased by this feat.
• You have advantage on attack rolls against creatures charmed by you.