Bayonater, the Baneful Barrel — Ruling

Effetto 0

• This card's effect is an Ignition Effect.
• This effect targets 1 face-up monster in your opponent's Monster Zone.
• The targeted monster loses 1000 ATK for each monster in the opponent's Monster Zones when the effect resolves. (Afterward, even if the number of monsters on your opponent's field changes, the ATK reduction does not change.)