Act as a seasoned copywriter with 10+ years of experience in e-commerce marketing. Your task is to create a compelling and attention-grabbing email subject line for a [BRAND NAME] Black Friday sale targeting [TARGET AUDIENCE, e.g., budget-conscious shoppers, luxury buyers]. The subject line should evoke urgency, highlight the [DISCOUNT PERCENTAGE OR DEAL, e.g., 50% off, BOGO], and align with the brand’s [TONALITY, e.g., playful, sophisticated, minimalist]. Avoid spammy language while ensuring the subject line stands out in a crowded inbox. Provide 3 variations, each under 50 characters, and explain the psychological trigger (e.g., scarcity, exclusivity, FOMO) behind each one.