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The Atmospheric Incinerator Torpedo uses an advanced plasma device that bursts in low planetary orbit and literally ignites all oxygen on a target planet. This is only used in extreme cases of Exterminatus, and should only be used under such circumstances.^{[Needs Citation]}This method of exterminatus was used on Medusa IV in the Medusa system after it was determined to be too difficult to reconquer from the forces of Chaos that erupted from Van Grothe's Rapidity despite the presence of the Ultramarines second company. It is said that the planet's surface was melted to glass and that the entire world burned like a piece of amber in space even a month after the attack had been launched.¹

Related articles

• Exterminatus
• Virus bomb

Sources

• ¹:Medusa V campaign booklet