Help the lawyer draft the eccentric billionaire's ridiculous contingency plan.

The beloved penguin would undoubtedly inherit the entire estate, were the billionaire to mysteriously vanish on Mars. In fact, the bird would already be the company's CEO right now, if it had not eaten the previous set of legal documents.

The correct sentence is: The beloved penguin would undoubtedly inherit the entire estate, were the billionaire to mysteriously vanish on Mars. In fact, the bird would already be the company's CEO right now, if it had not eaten the previous set of legal documents.

would: This is the result clause of a Type 2 (unreal) conditional, which requires the modal "would" to describe a hypothetical outcome.

were: In formal and C1-level English, we use the subjunctive "were" for all subjects in hypothetical scenarios. By omitting "if," the sentence uses formal inversion: "were the billionaire to vanish" means the exact same thing as "if the billionaire were to vanish."

had: This final sentence is a mixed conditional. The hypothetical condition occurred in the past (eating the documents), which requires the past perfect "had not eaten," while the result is in the present ("would already be").