The in-game shop uses shop tickets you earn from battles and claiming gifts, and they have Hourglass packs for sale
To be specific, Dragon Horn Hunter prevents you from taking damage from battles when your Normal Monsters are involved, and Sky Dragoons of Draconia allows you to destroy any one card on the field if your Normal Monster dealt damage by battle that turn
As far as strategy goes you want to notice that this card may be metal type but it does not need any metal energy cards, so you'll want to have this in an electric deck for sure
As you play, youll hopefully notice some synergies between the colors, and youll want to use these to your advantage
The first thing to look at is the card's design
Here is how these Charizards compare across eras: The Most Expensive Pokmon Packs and Sealed Products Single cards get the headlines, but sealed product is its own high-end market, and the prices can rival the grails