Giant mechanical orchids launched by the synths of Coppelius to defend their world, which brought down the Borg Artifact and challenged a Romulan armada.
Coppelius orchids were giant flower-shaped defence craft created by the android community on the planet Coppelius, home of Soji Asha and other synths descended from Data's work. They rose from the planet's surface to repel any ship that came too close.
In the first season of Picard, orchids attacked La Sirena and the Borg Artifact as they arrived, and the Artifact crashed on the planet. When a Romulan armada came to wipe out the synths, the orchids rose to face it, before Picard's intervention ended the confrontation.