The empress's sizzling magical crossbow, mistaken for a gun in advance intel, dropped after Carl's first banger sphere.
Princess Donut's pre-assault briefing guessed Empress D'Nadia probably had a gun; the first thing that happens in The Throne Room is a crossbow bolt slamming into Carl's shoulder and pinging off his Tech Shield, the bolt sizzling strangely where it lands. Donut cheerfully corrects herself — not a gun, a crossbow, she remembers now.
D'Nadia is loading a second bolt when Carl's first Banger Sphere staggers her into the wall and she drops the crossbow on the floor. She never recovers it, falling back on a concealed pulse pistol and then a knife.
An ornate magical crossbow firing bolts that sizzle oddly on impact.
D'Nadia's opening weapon, lost in the first exchange.