Cryoclasm

Color hosers have always been a category of inconvenience: a few extra mana, a tempo hit, the occasional dead card against the wrong opponent. This one is built to punish. Destroying a Plains or Island already strands a spell or breaks a mana base; the three damage stapled on top turns disruption into clock, shaving a turn off the kill while it does the work. That second clause carries the design: it is not asking the white or blue player to recover, it is taxing them for keeping the wrong land type in play. And because it reads "Plains or Island" rather than "basic," the targets stretch past the obvious to any nonbasic carrying those subtypes, the duals and shock lands that the affected colors most want to protect. The restriction is the whole bargain. Against a deck running neither subtype, it is a blank, and that hard ceiling is the price red pays for grafting burn onto Stone Rain at a discount. The lineage runs through the asymmetric anti-white-and-blue hosers red reaches for when it wants its hate card to advance the plan rather than just slow the opponent: earlier entries like Boil and Choke pushed the same color-tax logic in different directions years before this. Cryoclasm's particular contribution is folding reach into the destruction, so a single card cuts the opponent's resources and moves red's own clock forward in the same motion.