REDU format ruling
Fiend Skull Dragon
Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)"Cave Dragon" + "Lesser Fiend"
(This card is always treated as an "Archfiend" card.)
A Fusion Summon of this card can only be done with the above Fusion Material Monsters. Negate the effects of Flip Effect Monsters. Negate any Trap effects that target this card on the field, and if you do, destroy that Trap Card.
Rulings
- You cannot use substitute Fusion Material Monsters such as Beastking of the Swamps to Fusion Summon this card. You can use the effects of Metamorphosis, Magical Scientist, and Summoner of Illusions to Special Summon this card.
- If your opponent Flip Summons a monster with a Flip Effect, and chains a card like Offerings to the Doomed to destroy Fiend Skull Dragon, the Flip Effect will not be negated since Fiend Skull Dragon is no longer on the field when the Flip Effect resolves, and it will only negate Flip Effect as long as this card remains face-up on the field.
- The opponent may activate a Trap Card that targets Fiend Skull Dragon, but its effect will be negated and the Trap Card destroyed.
- Cards such as Torrential Tribute, Bottomless Trap Hole, Mirror Force, and Last Turn will all apply their effects to Fiend Skull Dragon because these cards do not target.
- You can activate Call of the Haunted to Special Summon Fiend Skull Dragon. After it resolves, Call of the Haunted will be destroyed and Fiend Skull Dragon will remain on the field. Remember that Fiend Skull Dragon must have been properly Fusion Summoned previously in order to Special Summon it from the GY.
- You can chain Call of the Haunted to the activation of a Flip Effect to Special Summon Fiend Skull Dragon, and the Flip Effect will be negated.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.