What problem does it solve? Teams commit to product or architecture options without stress-testing the assumptions behind them, discovering fatal flaws only after expensive implementation. This Skill adversarially challenges every option surfaced during an ideation session, exposing the premise that kills each option, hidden legacy costs, and points of no return before a decision is made. ## Core Features & Use Cases - Premortem Headlines: Generates 2-4 distinct failure headlines with different root causes, then asks the user which one is scariest to set severity ordering. - Per-Option Attack: For each option in options.md, identifies the single killing premise, a cheap experiment to test it, the hidden cost (anchored to concrete legacy files or specs), and the point of no return. - Cross-Cutting Risk Register: Checks six transversal risk categories such as single-person dependency, regulatory obligations, third-party integrations, data migration, and authentication changes. - Use Case: After running the Explorer stage of a Reversa ideation session, invoke the Challenger to produce a risks.md that attacks all options equally, including "do not build", so the Arbiter stage can score options against concrete risks. ## Quick Start Run the reversa-challenger skill in an active Reversa ideation session to generate the risks.md premortem document from the existing framing.md and options.md files.
