Clockwork creature

Pre-revisionist

Clockwork Swarms were composed of minute clockwork creations built by the students beginning their education at Feroz’s Wizards’ School on Ulgrotha. Many of them were destroyed because they were too dangerous.

Post-revisionist

During the Brothers' War, Urza created flocks of small clockwork birds to combat Mishra's dragon engines. They were able to tear the engines' skin and destroy them from the inside by igniting the internal fuel tanks used for the napalm-like fire breath.