Cardfight Coalition

[RD/KP10] Caught in the Rain

When the big bubble in the sky pops.

Caught in the Rain
Normal Spell Card
[Requirement] Activate if either player controls a face-up Field Spell Card.
[Effect] All face-up Normal Monsters your opponent controls lose 300 ATK for each monster your opponent controls until the end of this turn. Then, you can destroy 1 card in your opponent’s Spell/Trap Zone.

Source.