Throne and Liberty Operation: Defeat Queen Bellandir
Chapter 7: The Sandstorm Overlord Exploration Codex Entry

After Marcia pressed the button on the remote switch, Queen Bellandir charged. Her fierce attack was cut short when she stopped in the middle of the trap and took flight. Determined to bring her down, the raid group let fly every arrow they had. The enormous sandworm was engulfed in an explosion as the gunpowder chests caught fire, but managed to escape.