Caustic Rain

Land destruction has always been priced by what it leaves behind, and exile is the version that leaves nothing. Most of the genre lets the target return: Stone Rain and its kin send a land to the graveyard, where recursion, landfall payoffs, and graveyard-matters effects can still reach it. Exiling the land instead of destroying it closes those doors, denying the opponent any way to recur or recycle what they lost. That permanence is what the extra cost pays for: at four mana, double-black, this is deliberately more expensive than the genre's three-mana baseline, and the premium buys finality rather than tempo. Sorcery speed and the single-target restriction keep it from being a true engine; it strips one piece of a manabase or shuts off one critical nonbasic, and then it is done. The design sits in a quiet corner of black's toolkit, where land destruction is rare and usually comes attached to a heavier sacrifice or symmetry clause. Here the clause is simply the rate. What you get is a clean, narrow answer to lands you genuinely cannot afford to let come back: a Cabal Coffers, a Gaea's Cradle, anything whose return would undo the whole point of removing it in the first place.