Card Rulings:Red-Eyes Darkness Dragon

“Red-Eyes Darkness Dragon” can not be Special Summoned from your graveyard. Any Monster with the ‘except by’ Special Summon text can only be Special Summoned by the way listed on the card. A card does not need to have the text ‘from your hand’ on it to have this requirement. All monsters can only be Summoned from your hand, unless their text implies otherwise. (Source: Ry Schueller - Game Support Representative of Upper Deck Entertainment).