Geothermal Bog

The dual land whose only cost is a turn of tempo. It taps for either color of its two-color pair and asks nothing in return except that it arrive tapped, which is the whole tax: no life payment like the painlands, no shockland trade of two life for immediacy, no basic-type check like the original duals or the fetch-friendly Ravnica lands. That places it in the plainest tier of two-color fixing, the tapped-dual template that has appeared in nearly every color pairing across dozens of sets, and its type line does the quiet work: being both a Swamp and a Mountain means it registers for any effect that fetches or cares about those basic types, so a card that goes and gets a Swamp will happily grab this instead. The design logic is deck-slot arithmetic rather than power: the enters-tapped clause is a smoothing cost paid on curve, most painless in decks that already want to sit back early and most punishing in the aggressive shells that can least afford to skip a turn-one play. It is fixing for people who are not in a hurry, and the honesty of that trade is the entire pitch.