With Fire-Type Pokmon, you often see powerful moves that require discarding energy in order to work
Two weeks ago I was watching one of Saffron Olives Much Abrew About Nothing series with a Scarab God Pirates deck
It was the printing of a critical mass of these kinds of cards that allowed for the tokens archetype of goblins to really come to life
Players compete to collect Lore, or stop their opponent from earning their own Lore, to win the game
Unless paired with cards that let your creatures deal their combat damage via their toughness such as Huatli, the Suns Heart, Gauntlets of Light, Assault Formation and, more thematically, Treefolk Umbra your Treefolk will be sitting back and absorbing damage in the early game until you find the cards necessary to go on the offensive
Burning through all those extra cards adds more delve fuel to my graveyard, and it makes it easy to cast Dig and Cruise