The death sword comes right back out when you see AJ binding up Tempest with those green ropes of hers, and Dash’s attempt to stop you is blocked by a quick slash of the death sword before it comes down for another slash that undoes the ropes and frees your girl. She pulls the small glowing rope coil around her horn off, and blasts the shit out of Applejack with Sith lightning while the laser death sword reforms into a swarm of fast homing magic death missiles that chase after Rainbow Dash. She could probably have lost them in the buildings if she didn’t see you gut punching AJ, her instincts to protect her friend overriding her tactical sense and causing her attempted dive towards her to end in the missiles converging and blasting the shit out of her, her smoking body falling from the skies and hitting the stone of the street like a sack of potatoes.