Dragon Orage Ténébreux SR02-FR012

This card is treated as a Normal Monster while it is face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to become an Effect Monster with this effect, once per turn, you can send 1 Spell/Trap Card you control to the Graveyard, destroy all Spell/Trap Cards on the field.