Assassin's Trophy

The unconditional answer in two colors, with a tax baked into the resolution. For years the price of "destroy any permanent at instant speed" was a long list of exceptions: Maelstrom Pulse hit nontokens but not lands, Putrefy spared enchantments, Abrupt Decay capped out at three mana value. This collapsed all of those into a single line and asked for nothing in return except that the victim gets a basic land. That drawback is the whole negotiation. Ramping an opponent one land is real in the early turns, when developing their mana is exactly what you do not want to do, and nearly free in the late game, when they have no more lands worth fetching and the permanent you are killing matters more than a tapped-out Forest. The card is most precise when the target is a single irreplaceable threat (a planeswalker, a problem creature, an artifact engine) and least clean as proactive land destruction, where you are trading down to give them a fresh one. It belongs to the Golgari design tradition of paying a small, controlled cost for breadth rather than buying a narrow answer cheaply, and it remains one of the cleanest expressions of that trade: total flexibility, with the downside written into the spell rather than into its restrictions.