Save your unopened packs for late in the Mastery season , that way when you open all your packs you're more likely to reach duplicate protection (for rares and mythics) and earn wildcards because you have four of that common or uncommon
which means we,the players that don't blow their money on "random chances", will also have to buy checklist
OP-01 Manga Rare Shanks ($180-220 raw): Grading viable at PSA Value tier
Being able to play whatever you want without worrying about the cost, or plumbing all that mana into an obscenely massive X-cost spell, can devastate the board
While Undermine and Absorb are roughly equivalent in how powerful they are, Absorb edges its way forward due to the life gain aspect
Bloodbraid Elf The cascade ability on Bloodbraid Elf is right at home with Averna, the Chaos Bloom, one of the best cascade commanders