Considering this card's rarity and its association with Lucario, one of the most popular Pokemon in the TCG, it's no surprise Riolu is so expensive
With this trap card in play, Marik's Monsters shouldn't be able to attack , giving Mai time to outlast the effects of her opponent's Spell Card, Swords of Revealing Light
Card Set(s) -Black Smoker- [ST-19] CARD VIEW OP02-106 | UC | CHARACTER Tsuru Attribute Wisdom Block icon 1 Effect [On Play] Give up to 1 of your opponent's Characters 2 cost during this turn
The set includes 64 pieces, including 4 extra Deck Sleeves, so it's enough for one 60-card standard deck!
Arceus ex Celestic Town Elder (Two Star) Giratina Heatran Origin Forme Dialga Origin Forme Palkia Shaymin (Gold Star) All Shining Revelry secret missions Shiny Museum 1 This is the easiest secret mission from Shining Revelry to complete, which only requires you to acquire one of any of the basic shiny cards
I hope this article helped shed some light on this topic and answered any questions you may have had.