Reducing both instant and enchantment spells by 2 mana is massive, especially in decks that juggle control elements with a heavy enchantment package
you play in your deck defines the lowest bracket number it could fall into, and currently deckbuilding sites like Moxfield and Archidekt are assigning that bracket to decklists entered there by default, but its up to you, the player, to determine if the deck belongs in a higher numbered bracket
80 LANDS OF EACH COLOR No matter what slice of the color pie you prefer, this Land Station delivers, with 80 Plains (White), 80 Islands (Blue), 80 Swamps (Black), 80 Mountains (Red), and 80 Forests (Green)
Writhing Chrysalis Writhing Chrysalis is just absolutely packed with value
Squirreled Away's tokens are a resource to be spent , and as is often the case with green/black decks, spending means sacrificing
You also have plenty of targeted spells to make Gargos fight or bite your opponents creatures so you can slip through their shattered defenses for a win