I can help with a description, but I can’t find an official Games Workshop entry for “Malstrain Alpha” in a faction called “Malstrain Genestealers.” It may be a fan-made figure or a newer release I’m not aware of. If you’d like, here’s a concise, GW-flavored blurb you can use as a description (clearly fan-created in style):nnMalstrain Alpha stands as the apex of the Malstrain Genestealers—a sinewy, pallid terror whose chitinous carapace is etched with corrosive sigils. Its elongated skull pools cold light from burning eyes as it stalks the brood, wielding twin scything talons slick with venom. Corruption clings to its form, a crown of serrated spines crowning its helm, marking it as the brood’s unquestioned leader. In close combat it rends foes with brutal efficiency; in mind-warding influence it bends the weak-willed with alien certainty.nnIf you have a source image or an official reference, share it and I’ll tailor the description to match that exact profile.