Unearthly Blizzard

The Falter family (the line of "creatures can't block" tricks that powers one-shot kill turns) usually aims to wave through the whole defending wall at once. This one caps out at three blockers, a hard ceiling rather than a perk: against a deep board you cannot turn off enough of it to push lethal, and against a thin one you are paying full price for an effect a leaner Falter would handle for less. What sets it apart is the Arcane subtype. That tag does not give the spell anything by itself, but it makes the card a legal anchor for Splice onto Arcane: another spell carrying that ability can graft its own text onto this cast, so a swing-enabling sorcery doubles as the chassis a spirit-channel spell gets bolted onto. The bounded targeting is the price of that flexibility. A wider "can't block" clause would be too much free reach on a card meant to serve as a splice host, so the design buys that role back with a firm limit of three. As a standalone closer it is a serviceable, slightly stiff alpha-strike enabler that touches nothing until the swing. Spent at the right moment, it is a sorcery-speed declaration that the defender never got to make a blocking decision at all, and like every Falter, a dead card the moment the race is already lost.