Vandalize

Stone Rain and Shatter were both two-mana effects in their day, and the design wisdom that followed taught players to expect single-target destruction at a cheap rate. This sorcery does the opposite: it bundles both into one card at five mana and lets you fire either or both at once. The arithmetic is the whole tension. Pay one extra mana over the cheapest split and you get a two-for-one when you have two targets; play it against a board with only one, and you have grossly overpaid for what a two-drop would do. That asymmetry is what keeps the modal spell in check, and it is why the rate only ever looks good in a specific shape of game (one where an opponent has committed both an artifact worth killing and a land worth killing on the same turn). Five mana for double destruction is a poor exchange against most decks and a clean swing against the rare deck that hands you two targets. The "choose one or both" template is the honest version of flexibility: it never wastes the second mode by stapling it to a target that does not exist, but it also never lets you pretend the floor is anything other than a five-mana single-removal spell.