Advanced format ruling
Gladiator Beast Octavius
Card effect (current official text)When this card is Special Summoned by the effect of a "Gladiator Beast" monster: Target 1 face-down Spell or Trap Card in the Spell & Trap Card Zone; destroy that target. At the end of your Battle Phase, if this card attacked or was attacked: Shuffle this card into the Deck or discard 1 card.
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.