It doesn’t blow up. It just blows.

RD/KP12-JP055 暴風輪 Boufuurin (Ring of Storms)
Normal Spell Card
[REQUIREMENT] You can activate this by shuffling 2 monsters from your GY back into the Deck.
[EFFECT] Choose 2~7 monsters with different names in your opponent’s GY and shuffle them back into the Deck. If you shuffled 6 or more monsters with this effect, you can also choose 1 Level 8 or lower face-up monster your opponent controls and return it to the owner’s Deck.

Note: This card is a Ring of Destruction parody.

Source