Edison format ruling
White Night Dragon

Card text as printed in this era① If a Spell/Trap Card that targets this card is activated (Quick):
Negate the activation, and if you do, destroy it.
② If another face-up monster you control is targeted for an attack:
You can send 1 Spell/Trap you control to the GY;
change the attack target to this card.
Rulings
- The ① effect is mandatory.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.