REDU format ruling
Gladiator Beast Darius
Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
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".
Rulings
The ③ effect:
- It can't be activated unless there is a "Gladiator Beast" monster in your Deck.
- It can activate and resolve while "Skill Drain" is applying (without being negated).
- It can be negated by "Royal Oppression" (If it is, this card remains in the Deck (it is not destroyed)).
- "Battling" requires this card to be involved in Damage Calculation (If this card's attack is negated, the ③ effect can't activate).
- If multiple "Gladiator Beast" effects are activated at the end of the Battle Phase, they don’t go on the same Chain (they each activate, one after another, each on their own Chain).
Vs "Rivalry of Warlords"/"Gozen Match":
- If you have a Gladiator Beast of the same Type/Attribute in your Deck, you can activate the ② effect. If you do, you can Summon any Gladiator Beast of any Attribute.
Darius' Negation:
- The target's effects aren't negated if Darius is Set or leaves the field (except by "Bottomless Trap Hole").
- The target's effects aren't negated if the target is Set or leaves the field.
- If Darius is flipped face-down, the target won't be shuffled into the Deck if Darius leaves the field.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.