Victorious Momentum

Ability Score Increase. Increase your Strength, Dexterity, or Constitution score by 1, to a maximum of 20.

Momentum Sweep. When you reduce a hostile creature to 0 Hit Points with a melee attack, you can use your Reaction to immediately move up to half your Speed. This movement does not provoke opportunity attacks. If you end this movement within reach of another hostile creature, you can make one melee weapon attack against it as part of the same Reaction. If this attack hits, you gain Temporary Hit Points equal to twice your Proficiency Bonus. You can use this feat a number of times equal to your Proficiency Bonus, and you regain all expended uses when you finish a Long Rest.