This post explores MTG proxy usage for testing decks with MTGCardBuilder while following forum rules. Emphasize clear labeling of proxies, distinguishing them from authentic cards, and sharing design tips, templates, and gameplay ideas without hype. Highlight respectful etiquette, constructive feedback, and adherence to venue policies. Discuss responsible playtesting, balance, and how MTG proxy designs can spark creativity. Encourage transparent discussion about proxy legality and forum policies, ensuring content educates and assists practice rather than selling or misrepresenting. Aim for helpful, community-tested insights that support learning and collaboration.