This here is Steve, and hes going to be joining you every day for well, probably as long as this games around! I feel comfortable opening with a joke because almost every Magic player already knows this guy
While Jumpstart packs are mostly filled with reprints, they do have a plethora of new cards to hunt down
More importantly, these cards dont exile themselves upon resolution like modern extra turn spells do, which means all the Regrowth effects and Snapcaster Mage variants you can justify stuffing in your deck become much stronger
The combination of searching up a specific card and circumventing its mana cost is the devastating one-two punch on several unfair Magic cards (see Tinker and Stoneforge Mystic)
Estrid, the Masked Estrid, the Maskeds first ability can be very powerful, allowing you to untap creatures after attacking, or use their activated abilities multiple times
Then you can choose from your pool to build a deck using the cards you want