Your search for "Royal Decree TP6-EN004" revealed the following:
Royal Decree - TP6-EN004 - Super Rare from Tournament Pack: 6th Season, available at 401 Games Canada. Rarity: Super Rare Card Text:While this card is face-up on the field, negate the effects of all Trap Cards on the field except...
Royal Decree - HL03-EN006 - Parallel Rare from Hobby League Promos: Series 3, available at 401 Games Canada. Rarity: Parallel Rare Card Text:While this card is face-up on the field, negate the effects of all Trap Cards on the field...