Assault of Demonic Fury

When a creature has lower than 15 hp the cantrip can be activated. The caster lunges forward and places their hand on the targets chest. then the hand twists in a circular movement, first anticlockwise, then clockwise before withdrawing their hand, leaving a burning circle. They then form a snake head shape and thrust into the centre of the circle piercing any armour and flesh while their hand closes around the creatures heart. a quick tugging motion and it rips the heart straight out of the creature killing it instantly.