Forum:LADD trouble

if light and darkness dragon attacks a facedown card and opponent activates waboku, then light and darkness dragon activates his effect to negate waboku and the attack continues when the card is flipped up and it is a gladiator beast card, can the opponent activate gladiator beast war chariot to destroy light and darknes dragon? If Light and Darkness dragon is destroyed does he activate his second effect to summon a monster from the grave by destroying all other cards, and does the attack go through allowing the gladiator beast to swap out? long question that is quite confuzzling i know.