Typhoon

Hate cards in Legends were often built as flavor-first experiments, and this one wears its target on its sleeve: a sorcery whose damage scales with the most common land in the game, blue's home basic. The design logic is asymmetric punishment priced as a fair spell. Three mana for a fixed "deal damage equal to Islands" line would be unplayable if that number were small, but three mana for what is functionally an X-damage spell where X is "however many Islands the blue player decided to play" is a different proposition entirely, provided you have read the room. That conditional is the entire pitch: against a deck without Islands it is a blank, and against a mono-blue control deck it is a closer. This is one of a cycle of Legends color-hosers that deal damage scaling off basic land types, each keyed to one of the five basics. The shared conceit (your opponent's manabase becomes the weapon) is the kind of swingy, matchup-dependent hate the game largely moved away from once Wizards settled on hosers that hit creatures or permanents rather than lands themselves. As a relic, it documents an era when "what if green could just kill a blue player" was considered a reasonable card to print.