Mischief of the Gnomes (MP25-EN279) - 2025 Mega-Pack 1st Edition

This turn, reduce the Levels of all monsters in each player's hand by 1 (even after they are Summoned/Set). You can banish this card from the GY; this turn, reduce the Levels of all monsters in each player's hand by 1 (even after they are Summoned/Set).