Comics › X-Men: The Onslaught Revelation #1 Image 1 of 1 X-Men: The Onslaught Revelation #1 $10.99 X-Men: The Onslaught Revelation #1 (Marvel, 2021) by Si Spurrier: the X-Men's greatest foe, Onslaught. Add To Cart Added! X-Men: The Onslaught Revelation #1 (Marvel, 2021) by Si Spurrier: the X-Men's greatest foe, Onslaught.