Prompt: \"Imagine a nightmarish fusion between Phyrexian corruption and goblin mischief, giving rise to a new breed: the Phyrexian Goblin. These creatures embody the chaotic nature of goblins, yet are augmented by the twisted, biomechanical alterations typical of Phyrexian influence. Describe their appearance, a melding of goblin features with metallic implants and corrupted machinery. Detail their behavior, showcasing their impulsiveness, penchant for destruction, and infectiously malevolent intentions. Elaborate on their abilities, blending the swarm-like tactics of goblins with Phyrexian corruption, creating a force that overwhelms opponents while spreading insidious corruption through poisonous or mechanized means. Craft a vivid portrayal of these creatures and their role within the nightmarish realm of Phyrexia in the Magic: The Gathering multiverse.\"