Edison format ruling
Goe Goe the Gallant Ninja

Card effect (current official text)When this card inflicts Battle Damage to your opponent: Your opponent must discard 2 random cards. Your opponent must have at least 5 cards in their hand for you to activate and to resolve this effect.
Rulings
- If your opponent has 5 or more cards in their hand when this card inflicts Battle Damage, but 4 or fewer cards in their hand when this card’s effect resolves, (due to another card’s effect, etc.) they will still discard 2 cards at random.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.