Upgrading to a full account gets you 2 more of every Standard-legal common, 1 more of every Standard-legal uncommon, the ability to get cards, and the ability to enter tournaments
In either version you also have the option to just whack your opponent with a very beefy Kappa Cannoneer - that's never a bad plan
I hope you are staying safe in our modern COVID-19 world
Keep in mind that pack points are accumulated separately by expansion, so open booster packs from Mythical Island (A1a) to get pack points for Mew ex
In the late game, you'll either try to pull ahead in cards using a combination of Vraska, map tokens from Sentinel, the adventure side of Dreadknight, and Aclazotz's discard triggers , or look for an opportunity to combo by playing Vraska with a level 3 Innkeeper's Talent on board and ultimate her to instantly win the game
One of red's most common combat tricks is to grant first strike or double strike along with some power boosting mid-combat