Advanced format ruling
Gladiator Beast Darius
Card effect (current official text)When this card is Special Summoned by the effect of a "Gladiator Beast" monster: You can target 1 "Gladiator Beast" monster in your Graveyard; Special Summon that target, but its effect(s) is negated by this card, and it is shuffled into the Deck when this card leaves the field. At the end of the Battle Phase, if this card attacked or was attacked: You can shuffle it into the Deck; Special Summon 1 "Gladiator Beast" monster from your Deck, except "Gladiator Beast Darius".
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.