HELIOS One

Most utility lands that generate a resource and spend it later are content to draw a card or make a token; this one folds a scaling removal spell into the mana base and pays for it with a slow-burn energy engine. The build is a three-step commitment: tap for colorless like any other land, spend a mana to bank energy one counter at a time, then eventually pay X energy plus three mana and the land itself to destroy a nonland permanent whose mana value equals whatever X you chose. That "Pay X " clause is the interesting constraint. You decide how much of your stockpile to spend, so the removal is only as big as the energy you feel like committing, and any counters beyond X stay in reserve for a later activation off another source. It turns the land into a battery whose charge you meter out deliberately rather than dump all at once. Because the destroy mode reads "activate only as a sorcery," there is no ambush here: the answer arrives on your own turn, telegraphed by the counters you have been visibly accumulating, and the sacrifice means this particular land only fires once. What it offers in exchange for all that friction is inevitability from a slot that costs nothing to run: a colorless source that also happens to be a scalable, one-time removal spell with no mana-value ceiling except how much energy you were patient enough to store.