Magician's Valkyria [JUMP-EN009] Ultra Rare BT5-091 you can select and activate

you can select and activate 1 of these effect: •Destroy Spell or Trap Cards on the field up to the number of "Elemental Hero" and "Destiny Hero" monsters you control (not counting this card)

You may put it on the bottom

Set: Promo Finish: Cold Foil Type: Hero Subtype: Young Rarity: Promo Class: Bard Life: 20 Intellect: 4 At the start of the game

if you've played an attack action card and a 'non-attack' action card this turn

Magician's Valkyria [JUMP-EN009] Ultra Rare BT5-091 you can select and activateSet: Shonen Jump Magazine Promos Card type: Effect Monster Rarity: Ultra Rare Attack: 1600 Defense: 1800 Your opponent cannot select another Spellcaster Type monster of your side of the field as an attack target.