Thran Technology

Lore & Background

The Brothers' War opens with Urza and Mishra being taken in by the archaeologist Tocasia and raised at an excavation site studying ancient Thran artifacts. Both brothers are gifted, but their rivalry intensifies after they discover two powerful relics: the Mightstone and the Weakstone, which grant opposing abilities. A violent confrontation over these artifacts leads to Tocasia's accidental death and Mishra's flight into exile. Later, Mishra rises to power by controlling ancient war machines, while Urza becomes a master artificer in Kroog. The war between their factions escalates into decades of brutal warfare, fueled by increasingly destructive technology. In the final battle on Argoth, Urza confronts a transformed, partially mechanical Mishra who has willingly merged with Phyrexian technology. To end the war, Urza detonates the Golgothian Sylex, a device originally created by the Thran artificer Glacian and later modified by Urza. The Sylex's blast interacted with Dominaria's mana, triggering a relatively rapid Ice Age.

In Their Own Story

Decades before the war, Tocasia led excavations of ancient Thran sites, where young Urza and Mishra first handled the Mightstone and Weakstone. The stones granted opposing abilities, and the brothers' conflict over them ended with Tocasia's death. Mishra fled into exile, later using ancient Thran war machines to build power among the Fallaji. Urza, meanwhile, studied Thran designs in Kroog, creating his own technology. The war saw both sides deploying Thran-derived weapons, culminating on Argoth. There, Urza used the Golgothian Sylex—a Thran artifact—to destroy Mishra and end the conflict, though the blast devastated the land and triggered an ice age.

Reader's Guide

Thran Technology in The Brothers' War includes the Mightstone and Weakstone, two relics that grant opposing abilities and are central to the brothers' rivalry. Mishra controls ancient war machines, which he uses to rise to power among the Fallaji. The Golgothian Sylex is another Thran artifact, which Urza detonates to destroy Mishra and end the war. These items are excavated from ancient sites studied by Tocasia. The source does not describe how the technology operates or its broader applications beyond these specific artifacts and war machines.

Did You Know?

• The Mightstone and Weakstone were originally created by the Thran as part of a single powerstone that later shattered, not by Urza's powerstone-making process during the Brothers' War.
• Mishra rose to power by controlling ancient Thran war machines.
• Urza detonated the Golgothian Sylex to end the war; the Sylex was originally created by the Thran artificer Glacian and later modified by Urza.
• The Sylex's detonation triggered a relatively rapid Ice Age, not a gradual cooling over centuries.
• Mishra willingly merged with Phyrexian technology; he was not simply under the influence of the demon Gix.