There are also well knowledged players available that will love to help you understand the game and deck building
Similarly, booster packs of cards are constructed in a way to feature four different rarities of cards mythic (one in every eight boosters), rare (1 per booster), uncommon (3 per booster) and common (10 per booster)
Some examples: Swords to Plowshares, Teferis Protection, Chaos Warp, Great Train Heist (or other Spree cards, you pay extra costs but can go wild), Akromas Will, Deflecting Swat, Wear/Tear, and my personal favorite, Reprieve
In relative terms such cards would be very powerful in Magic as they would probably just be strictly better than basic land or barely playable