Batterskull & Kaldra Compleat Stoneforge Mystic may have helped put equipment in general on the competitive map, but she really put equipment with the living mechanic ability on the map
With the Divergent Powers Tin, you can choose the keen eye of Hisuian Decidueye V, the fearsome flames of Hisuian Typhlosion V, or the shadowy blades of Hisuian Samurott V, and then find even more useful Pokemon and Trainer cards in a handful of Pokemon TCG booster packs
It's a lot like the comparison between Wound Reflection and Warlock Class: Would you rather have the immediate effect on a card that does little else, or the card that requires more mana investment but gives you other utility on the way
cards helps protect them from wear and tear, as well as dust, dirt, and accidental spills at the game table (especially when double- or triple-sleeved)
It immediately doubles the mana you get from a land by earthbending onto it