Edison format ruling
Honest
Card text as printed in this era① During your Main Phase: You can return this card you control to the hand.
② During the Damage Step, when a LIGHT monster you control battles (Quick):
You can send this card from your hand to the GY;
that monster gains ATK equal to the ATK of the opponent's monster it is battling, until the End Phase.
Rulings
- This effect can be activated at any point in the Damage Step, even "During Damage Calculation".
- If you say "Damage Step?", and activate this effect, you have activated it at the Start of the Damage Step, not During Damage Calculation.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.