Tectonic Edge

The four-land clause is the whole negotiation. Strip-mining effects have always lived on a knife's edge: too cheap and they prey on color-screwed openings, denying a single early dual or utility land and snowballing a tempo lead into a win. This design answers that by gating the destruction behind an opponent's fourth land, which lands it squarely on the turn nonbasic manabases stop being fragile and start being a resource worth attacking. You cannot use it to keep someone off their second color on the play's opening turns; you can use it to deny a manland its activation, blow up a value land before it draws cards, or cut off a key splash in the late game. It taps for colorless in the meantime, so the slot costs almost nothing while the threshold sits unmet. That self-limiting restriction is the design's whole concession to fairness: it is an activation condition, not a trigger, a line in the ability's own text that refuses to fire until the board has matured. Where the more punishing land destruction of earlier eras needed bans or careful printing windows to keep it from choking out a developing player, this one simply cannot do that work. It arrives pointed at the lands that matter only once both players have settled in. The result is disruption sober enough to run in fair decks without warping the early turns, a posture toward land destruction Wizards has been comfortable returning to again and again.