Your best option to do that is by completing Battle Tasks or participating in limited-time events
These events teach you the basics of playing the game and how to build a deck of your own
With flying, trample, and haste, it comes out swinging right away, and when it connects, you draw cards and pile on +1/+1 counters equal to the number of different permanent types in your graveyard, turning every sacrifice into fuel for both power and card advantage
For convenience sake Im going to refer to this walkthrough and show the DNA digivolutions1
These 1st edition stamps appear on both holo and non-holo cards, so checking for them when evaluating their worth is vital
Birgi's mana boost is why she's a big deal, and Harnfel, Horn of Bounty plays quite nicely into that ability