Theyre about $39.99 USD, give you 100 cards plus a foil commander, and some other goodies
Allowing you to play an additional land one each turn, Exploration can massively accelerate your game plan
$25 Upgrade +1/+1 Counters is a very deep archetype so there's more sweet upgrade options that I could ever hope to cover, but I selected some of my favorites: for protection I've added Bulwark Ox and Mutational Advantage, a bunch of proliferates with Metastatic Evangel and Dreamtide Whale being the two best, ramp got a massive upgrade with Astral Cornucopia / Kami of Whispered Hopes / Purestrain Genestealer / Summon: Fenrir, and so on
Family Matters has cards like Inferno Titan in it, which, for eight mana with Zinnia in play, is able to divide six damage as a player wishes
We also re-examined the idea of having a new mechanic in the set
How Many Planeswalkers Can You Have Out