Heartseeker's Influence

You've grown along side this enigmatic blade, and as such you feel it's extra planer abilities influence your combat. You gain the following benefits:

• On your turn, when you score a critical hit with Heartseeker or reduce a creature to 0 hit points, you can make another attack as a bonus action.
• Before you make an attack with Heartseeker, you can choose to take a -5 penalty to the attack roll. If the attack hits, you add +10 to the attack's damage.