Item from Mistborn by Brandon Sanderson
The Allomantic amplifier metal. When burned simultaneously with another metal, it instantly burns all remaining reserves of both metals for one massively enhanced effect. The ultimate gamble — all power in a single moment.
Duralumin is the Allomantic nuclear option. Burning it alongside another metal consumes every last particle of both metals in a single explosive moment of enhanced power. A Coinshot burning duralumin with steel launches objects with devastating force. A Soother burning duralumin with brass can crush someone's emotions into absolute submission. Vin discovers duralumin's power and uses it to devastating effect — duralumin-enhanced Steel Pushes that launch her like a cannonball, duralumin-enhanced pewter strikes that shatter stone. But the cost is total: after the burst, both metals are completely gone, leaving the Allomancer powerless until they can drink more. Using duralumin is a commitment to ending the fight in one decisive moment.
A pale, lightweight metal alloy nearly indistinguishable from aluminum to the untrained eye. Metal flakes for vials are fine and almost translucent. Like aluminum, it has no distinguishing Allomantic pulse — it cannot be detected by Seekers.