Glimpse the Core

The Forest-fetch mode is the plainest kind of green ramp: a Rampant Growth variant that puts a basic Forest onto the battlefield tapped, restricted narrowly enough that it only feeds a green mana base and never smooths out a splash of another color. That half is deliberately unglamorous. The design lives in the second mode, which returns a Cave card from your graveyard to the battlefield tapped, and that clause pays off only in a deck built to sacrifice and recur its lands. The modal split governs when each line is live: with an empty graveyard the card can only ramp, but once a Cave has died or been fed to a sacrifice effect, the reanimation becomes the stronger read, letting you rebuy a utility land and its enters-tapped payoff for two mana. Green has always been the color that reaches back into its own graveyard for permanents (Regrowth and Eternal Witness for spells, Splendid Reclamation for lands), so pointing a recursion mode at the Cave subtype is a natural extension of that identity rather than a new axis. The limiting factor is that it is a one-shot sorcery, not an engine; the recursion happens once per copy, and any value loop depends on the Caves themselves cycling back to the graveyard through other means. Without a Cave to target, you have paid for a ramp spell and left the interesting half of the card unused.