unstable mtg booster box packs and the sets creative elements reflect that spirit Unstable Booster Box MTG Magic

You draw some extra cards, gain some life and put some extra power on the board, then overwhelm your opponent with your animated lands or some Zendikar's Roil tokens or some fatties

That alone changes how much value you can potentially get from a booster pack, let alone a booster box

Then take the reciprocal to get the number of packs required to hit that specific card

Play Boosters Play Booster Contents 67 Commons 1.5% of BLB Play Boosters contain a card from The List instead of a common

I suspect even BGS 9.5 commons are still worth submitting for grading if they are nice enough to merit a 9.5

If you cram your lists full of generic value pieces, like Esper Sentinel or Deep Gnome Terramancer, pass on Silverquill Lecturer