Superman / Batman #46

Superman and Batman surge forward through a swirling storm of green Kryptonite shards on this striking 2008 cover by Shane Davis and Matt Banning, with Superman firing heat vision and clutching what appears to be a strange, glowing purple crystalline fragment — teasing the cover's bold promise of "A New Form of Kryptonite!" Written by Michael Green and Mike Johnson, "K Chapter 3: Varietals" puts the World's Finest duo at the center of a Kryptonite mystery that looks both visually dynamic and genuinely threatening. If you've been following this arc, this chapter promises to push the stakes even further.