* When Clark discovers Greg's secret, the bug boy attacks him in an abandoned foundry littered with meteor rocks. Clark discovers two things: the rocks affect him like poison, but lead blocks this effect. Using lead shields for protection, Clark defeats Greg and saves Lana. Later, Clark's new knowledge solves an old dilemma - he uses an antique lead box, a gift from Lex, to give Lana back her meteor-rock necklace without endangering himself. *Source: Back of card.