# Sword of Sinew and Steel This mythic equipment from the TMNT crossover set represents a mechanically strong protection piece in constructed Magic. Collectors value it primarily for the crossover appeal rather than raw power level. The card's draw to protection-focused decks and artifact strategies gives it baseline demand among players who actually use their cards. The foil variant typically commands a modest premium, though crossover sets generally see less severe foil multipliers than standard releases. Condition and centering matter more here than with many mythics, since the TMNT printing had variable quality control. For most collectors, owning a copy matters more than hunting specific variants—the crossover itself is the real appeal.