Thaumatic Compass // Spires of Orazca

The transform condition is the whole tension of this two-faced permanent: it starts as a slow fixing engine and flips into a defensive tool once your manabase is already deep. As Thaumatic Compass, it tutors a single basic land into your hand, not onto the battlefield, so it buys card advantage and color consistency rather than ramp; the first activation asks for the full five mana (two to cast, three to activate), with subsequent uses at three. The flip clause keys off seven lands at your end step, which means the front half wants to overshoot on land drops rather than curve out cleanly. Once it crosses that threshold, Spires of Orazca arrives as a colorless source with a quietly unusual attack-blunting ability: it does not destroy or bounce, it untaps an attacking creature an opponent controls and pulls it out of combat, fogging one attacker at a time at land speed with no card cost. That is the design signature here, a permanent that first solves your mana and then polices the board, with the untap-and-remove clause functioning as a repeatable single-target fog stapled to a land. The reward structure asks you to plan for the transition rather than build around either face in isolation: neither half is spectacular alone, but the sequence of fix-then-defend is the point.