Well, you'll either need to collect the cards from Arena booster packs for the sets they came in, or else directly 'craft' the specific cards you need using MTG Arena Wildcards - effectively tokens you can exchange for the exact Common, Uncommon, Rare, or Mythic Rare card you want, depending on the type of Wildcard
This last group is also easily identified by the SP logo at the bottom left corner
Look at the right edge of the artwork box
SR Super Rare UR Ultra Rare SE Secret Rare UL Ultimate Rare PS Platinum Secret Rare CR COLLECTOR'S RARE QCSE Quarter Century Secret Rare Cherubini, Ebon Angel of the Burning Abyss X DARK Link 2 [ FairyLinkEffect ] ATK 500 DEF - 2 Level 3 monsters Monsters this card points to cannot be destroyed by card effects
Product Details Rarity: M #:551b Card Type: Creature Bird P / T: 3 / 2 Casting Cost: 2G EDHREC ANALYSIS SCRYFALL RELATED PRODUCTS:
If Scoop Up was around, you could then move Iron Valiant Ex without skipping an attack after firing off a Lazer Blade