The first is Ill-Tempered Loner, which is a four-mana red 3/3 that you can buff by paying mana, and it deals damage to stuff when it takes damage
There are many and various schools of thought about the best assortment of cards to make a 60-card battle deck, but I shall try to annoy all of them by suggesting at first you think 20:20:20
Good matching then checks the card name, artwork, set logo, language, and the tiny card number line at the bottom left or bottom right
Ragavan, Nimble Pilferer is one heck of a powerful little monkey that can provide card advantage by exiling the top card of an opponent's library whenever it deals combat damage, allowing you to play that card, AND creating a treasure token
However, these cantrips never produce card advantage, only selection