Skyshroud Claim

Most ramp pays its tax in tempo: you trade a turn's worth of mana to find one untapped source and net a single mana ahead. This breaks that arithmetic by pulling two Forests onto the battlefield untapped, so it doesn't just fix and thin the deck, it lands ahead of its own cost. Resolve it for four mana and you have two new lands ready to spend immediately, the same turn you cast it; come your next untap step, you're sitting two lands richer than a one-for-one ramp spell would leave you. The word that does the structural work is Forest: it searches the land subtype, not basics, so the payoff scales with how many duals and shocklands carry that type in your colors. A deck running Stomping Ground or Breeding Pool turns this into untapped fixing that fetches the right colors; a mono-green pile just grabs two Forests and accelerates. That subtype dependency is the load-bearing constraint, the thing that separates it from a flat "ramp for two" effect: the better your manabase, the more this does, and a base with no green-typed nonbasics gets the worst version of the card. It puts the upside on the manabase rather than the spell slot, which is an unusual place to invest a ramp sorcery's ceiling.