# Sign in Blood Sign in Blood is a straightforward black instant that's been reprinted multiple times across Magic's history. The Strixhaven Mystical Archive version matters primarily for its beautiful frame treatment and premium presentation options. Collectors appreciate this set for its special card stock and artistic presentation rather than the card's mechanical significance. The etched foil variant appeals to those seeking alternative finishes beyond standard foil. Since this is a reprint of an older, widely available card, collectors typically view it as an aesthetic choice rather than a chase piece. The appeal lies in completing the Mystical Archive collection or preferring this particular art direction over previous versions.