This is The Sentry/X-Men one-shot published under Marvel's Marvel Knights imprint, written by Paul Jenkins with art by Mark Texeira. The cover features a dramatic painted-style composition depicting the Sentry standing on the ground while a winged figure - Warren Worthington III, Angel of the X-Men - soars above against a stormy sky backdrop. The book is priced at $2.99 US / $4.50 CAN and carries the Comics Code Authority seal. This is a Direct Edition copy. The Sentry crossover one-shot series was part of the landmark 2001 storyline reintroducing the Sentry character to the Marvel Universe. A solid addition to any Marvel Knights or X-Men collection, and key reading for Sentry completionists.