You have honed the art of battle performance, granting you the following benefits:

• You gain proficiency in the Performance skill. When using this skill in the context of a fighting ring or gladiator arena, you add twice your proficiency bonus instead.
• Immediately after killing an enemy, you can force one enemy creature within 10 feet of you to succeed on a Wisdom saving throw (DC 8 + your proficiency bonus + your STR modifier) or become frightened of you. While the creature is frightened in this way, you have advantage on all attack rolls against it. At the end of each of its turns, the target can make another Wisdom saving throw. On a successful save or after landing an attack on you, this effect ends on that target and it is immune to this effect for 24 hours.