Advanced format ruling
Iron Core Luster
Card effect (current official text)Reveal 1 "Iron Core of Koa'ki Meiru" in your hand. Negate the activation of your opponent's Spell or Trap Card, and destroy it.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.